WHY DON'T YOU ACTUALLY RE-WRITE 'PROJECT MANAGER'?
Mac OS 10.15.7, Premiere 2021 (15.2.0 Build 35)
FIX PROJECT MANAGER.
I've been doing a little looking around, wasting valuable billing time trying to make sense of why the Project Manager is such a piece of shite.
So here's what I discovered yesterday...
I attempted to Collect and Copy a problemetic project, which has failed before. And it failed again, but not before I got a glimpse of the stupid way you've coded this routine.
What I did was watch the Finder during the progress of the Project as it was collected and copied to the new location. Premiere began the process by writing the copied files to the location I specified...until it stopped, with the dreaded warning "An unknown error occurred"...yeah, ********.
What I DIDN'T do was click OK at that point, and supposedly Save the project... which also BLOWS AWAY ALL THE "COPIED" FILES!
I left the box open, and copied what was in the partially-collected project over to another drive. SO NOW, I have a record of what might have caused the the routine to hiccup. It seems to get hung up on files with long long long paths, such as found in these infernal multi-part MXF, and other files that bury the actual media under a ton of folders.
So, geniuses at Adobe, you may want to start there and see if there's some limitation in terms of qualified file names when running the PM.
Antoine Autokroma commented
We did recode the Project Manager, it's called PlumePack :)
Free trial with analysis of your project here https://www.autokroma.com/PlumePack
Kevin Monahan commented
Hi Mike, It's Kevin from Adobe support. I responded to your forums post. I have a feeling that you are dealing with CF or SD Card based media. Is that the case? If so, please try importing footage via Media Browser and not File > Import. That way, metadata can be carried into media management operations, like Project Manager.
Hope I can assist you further on Adobe forums. BTW, I upvoted.