Hey there! I have encountered a weird problem after updating some of my own assets and bringing them into the project.
Basically I have added some assembly definitions so the solution file for my project got updated, but no matter what I do - plastic won't let me commit it, which is very frustrating.
I use only the main Plastic SCM client (with no unity plugin or the built-in Plastic SCM integration). I attached the screenshot of the error.
As the message suggests - I tried undoing things, then relaunching unity and checking-in again - but it creates the same error. I also tried removing all the new assembly references that were added to the file but that also throws an error. So far I am completely unable to check-in the file which is extremely frustrating.
I really wish I could also understand what does "not being in sync with the changeset" means, considering I completely undid the changes, made sure everything is updated and tried to commit it again.