Sorry for the delay. Been busy.
It seems that this particular project crashes Rpr on other computers as well.
I've tried opening it on my studio computer with same results.
I did not find an accurate pattern yet as It always crashes during playback will I'm not doing anything particular. Sometimes upon clicking an object, some other times only while playing back without even touching anything.
There's absolutely no plugin instantiated in this project.
The only thing I did yet is:
I've imported a bunch of "dual mono" stereo tracks. And because it imported everything as single mono tracks, I've combined each stereo tracks with a custom command I've made that I found in this forum.
And then setup a bunch of folders.
Nothing very particular.
I also realized that my trial licence was expired so maybe Reaper falls into a "self-destructing" state after trial period?
BTW I've since bought a legit licence and I'm waiting for my official serial number from cockos...