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12-09-2010, 04:29 PM
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#1
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Human being with feelings
Join Date: Feb 2010
Location: Ottawa, Canada
Posts: 42
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MIDI error: The following MIDI inputs could not be opened
Getting this error message.
I've got a Sony Vaio running Windows 7 Home Premium in 64-bit.
Reaper v3.73/x64 rev e6b9ce Nov 17 2010/
Everything has been working fine with my UA-25EX interface until I set up some actions to test the use of a Kork D1600 as a control surface. The first session with those actions was fine but since the second session I get "MIDI error: The following MIDI inputs could not be opened: UA-25EX".
If I boot the machine with the interface connected I get the error message when I lauch Reaper. If I boot the machine without the interface connected I don't get the error message. If I subsequently plug in the interface and hit Play in Reaper, it will start responding to the controller but the audio is coming from the laptop speakers not the interface speakers (even though other apps use the interface). Now, if I close and reopen Reaper, the error message returns.
I have run MIDI-OX to prove that although Reaper can't find the interface, there is indeed MIDI data coming in.
I have taken off the actions but that hasn't fixed the problem.
I am not the only one with this issue. Chevys&Gibsons was trying this out (it was actually his questions on StudioTrax.net that got me trying this out) is also getting "The following MIDI inputs and outputs could not be opened TASCAM US-1641"
The only change to my system might have been a minor revision upgrade to Reaper that I installed in the last few days. Other than that, the only change was putting in those actions as described in the Reaper handbook.
Anyone got any idea what the heck is going on and how I can back out of this? I'd rather know what the issue is than resorting to uninstalling and then reinstalling Reaper.
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12-09-2010, 05:37 PM
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#2
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Human being with feelings
Join Date: Oct 2008
Location: Right Hear
Posts: 15,618
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don't really know as I don't use those cards but you might see if there are driver updates for what you are using.
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12-16-2010, 08:53 AM
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#3
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Human being with feelings
Join Date: Feb 2008
Location: Virginia Beach VA
Posts: 2,274
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Bump this is just a bump
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12-20-2010, 12:52 PM
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#4
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Human being with feelings
Join Date: Feb 2010
Location: Ottawa, Canada
Posts: 42
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Thanks for the bump.
I just had a play and found I had a control surface configured, I took out the HUI and that seems to have fixed it. I even reloaded the Actions that let the D1600 control Reaper. Hopefully this can survive a reboot!
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12-29-2010, 07:28 PM
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#5
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Human being with feelings
Join Date: Dec 2010
Posts: 7
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I'm habing the same issue with a firestudio. the project midi outputs cannot be opened, blah blah blah. getting highly annoying and I'm at my wits end with ways to fix it.
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12-29-2010, 08:36 PM
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#6
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Human being with feelings
Join Date: Aug 2008
Location: Cumbria, UK
Posts: 2,255
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You have something assigned as a control surface, and you have the checkbox "Warn on errors opening surface MIDI devices" ticked. Look in Preferences>Control Surfaces.
Steve
__________________
Meto ergo psallentes est
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01-10-2011, 05:14 AM
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#7
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Human being with feelings
Join Date: Oct 2008
Location: Minneaplis
Posts: 3,317
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bug submitted: http://forum.cockos.com/project.php?issueid=3174
say you're able to reproduce it, if you can reproduce it - then the devs fix it - I hope.
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01-12-2011, 04:12 PM
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#8
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Human being with feelings
Join Date: Oct 2008
Location: Minneaplis
Posts: 3,317
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vote on bug please!? i absolutely hate having to restart reaper to get midi back...
oh and even if I uncheck the warnings box - the error prohibits the all midi functionality so checking a box that is essentially "don't tell me when there's an error" doesn't really work as a fix.
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01-12-2011, 06:33 PM
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#9
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Human being with feelings
Join Date: Dec 2010
Posts: 7
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i unchecked the box and it seems to be working for me (knock on wood)
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01-13-2011, 11:15 AM
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#10
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Human being with feelings
Join Date: Oct 2008
Location: Minneaplis
Posts: 3,317
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Quote:
Originally Posted by sameal
i unchecked the box and it seems to be working for me (knock on wood)
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mine is and has been unchecked, and i'm still having this problem.
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03-04-2011, 02:35 AM
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#11
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Human being with feelings
Join Date: Jan 2011
Location: Tasmania, Australia
Posts: 37
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I get these errors when a Control Surface is on the same interface
Hey guys, I had the same issue when trying to use rtpMIDI as a MIDI interface in REAPER for control via the AC-7 app from an iPod Touch.
I found in a post somewhere that if you're using a control surface then the MIDI interface(s) you set under Control Surfaces must be not be enabled in the MIDI devices section. It seems that the control surface needs to have complete access to the device and when Reaper tries to open a connection to the MIDI interface it can't.
Sucks if you a control surface and and other midi device on the same midi interface. It didn't matter to me because I was using a virtual MIDI interface set up just for the controller.
Is having a control surface configured the common thread here?
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03-04-2011, 03:32 AM
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#12
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Super Moderator (no feelings)
Join Date: Dec 2007
Location: On or near a dike
Posts: 9,836
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Welcome to the forums!
Quote:
Originally Posted by adcingeo
Is having a control surface configured the common thread here?
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That's usually the reason for that error message, yes. Well, almost - actually it's just that you can't assign the same MIDI port "for control" in Preferences->Audio->MIDI Devices and as a control surface in "Preferences->Control Surfaces simultaneously. This is probably not that bad when your control surface comes with its own build-in (USB-) MIDI interface or you have a MIDI interface with more than 1 port.
Pixeltarian's issue is causing the same message but is probably rather caused by the interface and REAPER losing connection, so it's not related to this.
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05-24-2011, 11:25 PM
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#13
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Human being with feelings
Join Date: Sep 2010
Posts: 37
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adcingeo your a champ!!!
Ive been stressing hard all day over that
All fixed now!
Cheers dude!
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06-06-2012, 11:11 AM
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#14
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Human being with feelings
Join Date: Aug 2009
Posts: 32
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Error hapening for me too
Hi,
It looks like it's been a while since someone reported this error.
I'm experiencing this issue each time I try to enable any midi device.
I've deleted all my control surfaces from the control-surface list, disconnected them from the PC etc, without success.
This is happening to me in reaper 4.22 32bit.
I tried installing reaper 4.22 64bit, and this doesn't happen there.
Anyone?
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06-07-2012, 12:24 AM
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#15
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Human being with feelings
Join Date: Aug 2009
Posts: 32
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Quote:
Originally Posted by ziflingus
Hi,
It looks like it's been a while since someone reported this error.
I'm experiencing this issue each time I try to enable any midi device.
I've deleted all my control surfaces from the control-surface list, disconnected them from the PC etc, without success.
This is happening to me in reaper 4.22 32bit.
I tried installing reaper 4.22 64bit, and this doesn't happen there.
Anyone?
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Eventually i found out it was the issue in the following link:
http://avid.force.com/pkb/articles/e...oting/en416511
It didn't work until a computer restart though
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02-04-2013, 04:25 AM
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#16
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Human being with feelings
Join Date: Feb 2013
Posts: 1
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01-01-2014, 03:34 PM
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#17
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Human being with feelings
Join Date: Jan 2014
Location: Planet Earth at this time
Posts: 1
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Finally an Answer !
Holy Jebus I've been fighting this for days, and THIS was the fix.
THANK YOU MY MUSICAL BROTHER !
Quote:
Originally Posted by Ollie
Welcome to the forums!
That's usually the reason for that error message, yes. Well, almost - actually it's just that you can't assign the same MIDI port "for control" in Preferences->Audio->MIDI Devices and as a control surface in "Preferences->Control Surfaces simultaneously. This is probably not that bad when your control surface comes with its own build-in (USB-) MIDI interface or you have a MIDI interface with more than 1 port.
Pixeltarian's issue is causing the same message but is probably rather caused by the interface and REAPER losing connection, so it's not related to this.
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__________________
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Make your time count, and not just in 4/4
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10-05-2014, 01:03 PM
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#18
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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MIDI error: The following MIDI inputs could not be opened
Deleted
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
Last edited by Riqiv; 10-05-2014 at 03:25 PM.
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10-05-2014, 03:24 PM
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#19
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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Find the answer (post deleted).
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
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10-05-2014, 03:28 PM
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#20
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Human being with feelings
Join Date: May 2006
Location: Surrey, UK
Posts: 19,681
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Riqiv,
It would help others if you could leave your original problem and the resolution posted here
__________________
DarkStar ... interesting, if true. . . . Inspired by ...
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10-05-2014, 07:46 PM
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#21
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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Original Question
Hello all,
I'm going to bump this thread instead of starting a new one.
I'm getting the message above when I try to set preferences:
Audio>Midi Devices shows my Casio piano
(The "Apply" button is greyed out, inactive.)
When I push "OK" a warning reads:
he following MIDI inputs could not be opened
CASIO - CASIO USB MIDI
===
Audio>Device shows "default system devices
===
Plugins>Control Surfaces the window is blank (nothing added) and "Warn when errors opening is unchecked"
Any ideas?
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Sorry, the solution may have been a restart of Reaper, but there are so many things I tried I'm not sure. Thx and sorry about that!
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
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10-06-2014, 03:52 PM
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#22
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Human being with feelings
Join Date: Jan 2010
Location: Kalispell
Posts: 14,759
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Quote:
Originally Posted by Riqiv
Hello all,
I'm going to bump this thread instead of starting a new one.
I'm getting the message above when I try to set preferences:
Audio>Midi Devices shows my Casio piano
(The "Apply" button is greyed out, inactive.)
When I push "OK" a warning reads:
he following MIDI inputs could not be opened
CASIO - CASIO USB MIDI
===
Audio>Device shows "default system devices
===
Plugins>Control Surfaces the window is blank (nothing added) and "Warn when errors opening is unchecked"
Any ideas?
========
Sorry, the solution may have been a restart of Reaper, but there are so many things I tried I'm not sure. Thx and sorry about that!
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Did you check to see what your settings are in Preferences>Audio, MIDI Devices?
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10-06-2014, 06:23 PM
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#23
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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Hi Todd,
Yes thx, I have the Casio piano enabled for midi device playback.
I actually prefer it to Sibelius Sounds or Kontakt Player (I may download the free Kontakt 5 player and sounds).
If I do download Kontakt Player, will it show up in:
"Preferences>Audio>Midi Devices", or elsewhere?
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
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10-07-2014, 08:44 AM
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#24
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Human being with feelings
Join Date: Jan 2010
Location: Kalispell
Posts: 14,759
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Quote:
Originally Posted by Riqiv
I actually prefer it to Sibelius Sounds or Kontakt Player (I may download the free Kontakt 5 player and sounds).
If I do download Kontakt Player, will it show up in:
"Preferences>Audio>Midi Devices", or elsewhere?
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No, Kontakt is a VSTi and you load them in the FX window just like any other FX. Of course you have to have the VSTi FX file (such as dll) placed in your FX folder.
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10-07-2014, 10:14 AM
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#25
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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Yes, I was looking thru my Reaper Power book by Geoffrey Francis last nite and looked into the FX in Reaper.
Is there already a VST in Reaper or would you suggest Kontakt 5 (or something else).
Would that mean (using a VST in Reaper Effects) that I'd hear the MIDI sounds thru my speakers (instead of the Casio piano), or would it be an effect like reverb (having a sound effect without changing the output from the Casio)?
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
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10-07-2014, 01:47 PM
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#26
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Human being with feelings
Join Date: Jan 2010
Location: Kalispell
Posts: 14,759
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Quote:
Originally Posted by Riqiv
Yes, I was looking thru my Reaper Power book by Geoffrey Francis last nite and looked into the FX in Reaper.
Is there already a VST in Reaper or would you suggest Kontakt 5 (or something else).
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Reaper doesn't have any what you would call, quality type of VSTi instruments. I think Reaper does have a couple of synth type VSTis but I've never used them other than for making tests.
Reaper does have ReaSamplOmatic (RS5K) that you can load quality samples into and it sort of works okay but has it's limitations.
There is a distinction between VST and VSTi, VST is a basic FX plugin such as EQ, Compressor, Limiter, Chorus, Delay, etc... On the outer hand, VSTi stands for Virtual Instrument and will usually mean a Synthesizer, Sample Player (like the free Kontakt 5 player or the Aria Player), or a Sampler (like the full version of Kontakt 5).
With Sample Players such as the Aria Player or Kontakt 5 Player, they come with samples of sampled insturmnets. Usually Sample Players come with all the samples that can be used in that VSTi and the user can not program their own samples.
On the other hand, a sampler such as the full Kontakt can be reprogrammed with your own samples along with much much more.
Quote:
Would that mean (using a VST in Reaper Effects) that I'd hear the MIDI sounds thru my speakers (instead of the Casio piano), or would it be an effect like reverb (having a sound effect without changing the output from the Casio)?
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Yes, if you've got everything setup right, you'll hear the sound that is generated from the VSTi or your Casio that is receiving your midi. Keep in mind Midi does not make sound by itself.
No, it has nothing to do with reverb and is not like reverb at all. I'm not sure how your Casio works, it either uses samples or is a synth or maybe a combination of the two but one way or another, it is it's own sound generator.
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10-07-2014, 04:02 PM
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#27
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Human being with feelings
Join Date: Nov 2010
Location: NYC
Posts: 160
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Thx Todd,
Understood :-)
__________________
Richie Vitale/OS Catalina
Reaper vCatalina 64 Bit
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12-15-2014, 01:31 PM
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#28
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Human being with feelings
Join Date: Nov 2014
Posts: 3
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MIDI Error
I am also getting this message, and I'm running no control surface, so none are detected. My MIDI controller is an M Audio Axiom 25. I've tried everything, and I'm ready to chunk Reaper in the creek!
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12-16-2014, 03:49 AM
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#29
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Human being with feelings
Join Date: Jan 2011
Location: Zürich
Posts: 1,008
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There is a glitch in the axiom drivers or firmware or whatever that does not always recognize when the application that had access to the port has quit. As only one application may use this port, the next application (not only reaper) cannot access this port.
If the error occurs, quit reaper, unplug the axiom, wait a second, plug it back in and restart reaper. This always helps on my machine.
Assumed you are using windows.
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08-05-2018, 03:25 AM
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#30
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Human being with feelings
Join Date: Aug 2016
Posts: 62
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It´s happening again with the new update (2018).
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08-13-2018, 08:50 PM
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#31
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Human being with feelings
Join Date: Jun 2018
Posts: 23
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JUST an FYI here.
Same kind of thing here.
Same message, same MIDI error: The following MIDI inputs / outputs could not be opened....etc.
(I'm certainly not sure at all what caused this, as I had not had this project open for a month or so. I did update to latest version of Reaper since then, tho.)
On closer inspection, multiple instances of my current MIDI keyboard were displayed in MIDI preferences, with 3 exclamation marks next to one of them. All MIDI routing on ALL the MIDI tracks was also completely hosed (wiped out).
I deleted the instance of my MIDI keyboard that was displaying the exclamation marks in Preferences and re-routed all tracks, and all was good to go again.
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08-17-2018, 05:22 AM
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#32
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Human being with feelings
Join Date: Sep 2010
Posts: 40
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Same problem upgrading today from 5.26 to 5.941, but downgrading to 5.93 all works fine!
It's clearly a bug on release 5.941
Bye.
Pilloso
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08-17-2018, 08:40 AM
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#33
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Human being with feelings
Join Date: Sep 2010
Posts: 40
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Sorry, also in my case there was old connection with name similar to good ones, it's due to a new functionality on release 5.941 but isn't a bug, simply a reminder that marks old connections that you can simply delete with new function "forget".
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04-11-2020, 03:59 AM
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#34
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Human being with feelings
Join Date: Dec 2015
Posts: 1
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The following MIDI inputs could not be opened:
Hi there,
I bought Reaper..., but cannot quantize drum (nothing happen).
My M-Audio Keystation 61 not working, error massage: "The following MIDI inputs could not be opened"
Good start..., so far useless.
Version: V6.08
Can somebody help me?
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