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Old 10-16-2018, 02:40 AM   #1
BartR
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Default [5.96] Error opening MIDI devices

Each time I run Reaper, I get this error (see the attachment).
It cannot open MIDI ports ...
But ports are, instead, correctly active and working.
I got this issue since the previous version of Reaper and I was hoping it was solved with the present one. But: no ... it still up there
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File Type: jpg Reaper MIDI Ports error.JPG (30.1 KB, 456 views)
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Old 11-03-2018, 08:38 PM   #2
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Same here! Pops up every time I hit play.
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Old 11-03-2018, 10:18 PM   #3
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It's a new feature. REAPER now remembers old (no longer present) MIDI devices and optionally warns if they aren't connected.

Either forget these devices in Preferences > MIDI Devices or disable the new warning.
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Old 11-03-2018, 10:24 PM   #4
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Default Wish I could.

I really wish I could disable them but there does not appear to be any way. There are several devices (for everything I have ever used over the years and some have three exclamation marks or odd symbols in front of them but there is no way to delete any of them. If I open other audio programs such a Studio One, I see a list of actual current devices and these other devices do not appear. Im digging for a Reaper midi ini file that maybe I can erase.
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Old 11-03-2018, 10:27 PM   #5
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Right click on the device and select "Forget device".




Last edited by cfillion; 11-03-2018 at 10:33 PM.
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Old 11-03-2018, 10:55 PM   #6
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Default Thanks but that doesn't work.

Thank's for your help. I know that page well and have added and deactivated devices countless in the past. That page is not working correctly though and I have no option to delete any of the device. It only gives me a config pop up.
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Old 11-03-2018, 11:05 PM   #7
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Default solved

Finding and deleting reaper-midihw.ini did the trick for me. Hope this helps someone else.
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Old 11-03-2018, 11:27 PM   #8
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Quote:
Originally Posted by Bohemo View Post
Thank's for your help. I know that page well and have added and deactivated devices countless in the past. That page is not working correctly though and I have no option to delete any of the device. It only gives me a config pop up.
That config dialog is shown on double click. The option to forget a device is shown on right click. It's in the context menu, not in the config dialog.

Last edited by cfillion; 11-03-2018 at 11:46 PM.
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Old 11-04-2018, 12:13 AM   #9
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Default yep, that didn't work

Yes, I realize that but as I said, it (right click) didn't work. I posted what fixed it for me. Now it works as expected and I can once again delete devices. Thanks again for your help.
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Old 11-04-2018, 12:40 PM   #10
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Quote:
Originally Posted by cfillion View Post
It's a new feature. REAPER now remembers old (no longer present) MIDI devices and optionally warns if they aren't connected.

Either forget these devices in Preferences > MIDI Devices or disable the new warning.
The problem is: no one of the devices was ever disconnected and/or uninstalled.
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