I will not open existing projects or start new ones in X3 for now.
Two serious problems that affect me.
1. Waves VST3 versions will not retained saved settings upon reopen of a project. Noel says he should have this in a patch by the end of the week
2. Any VST3 followed by any UAD plug causes strange behavior such as motor boating, (I believe) silent projects and crashes SONAR.
I hope #2 is fixed by the end of the week too.
The alternative is to go back to using only VST2 plugs. Which I'll consider if the fixes are delayed beyond when I need to open projects for real. Going back to X2 for now may also be the alternative but that means going back and deactivating all the mono plugs again (aaaaaaaarrrrrrrrrrrrrrrrrrrrgggggggggggggggggggghhhhhhhhhhhhhhhhhhhh ~TM STraummy)