c c

@Grem No I did not reset and re-scan. The weird thing is that I can launch a project 3 times in a row (literally open/close/open/close...), and then the 4the time it has problems. The Reset VST Settings screen says: "any custom configuration settings will be lost". Not sure what that precisely means?

Same here. Did the Waves V12 update a week ago and then problems began. After communicating with Waves the gave me un-install/install instructions. The problem now seems less but it is stil there. Projects fail to open because of error regarding the plugins. You can roll back to Waves V11 and then everything seems ok. But Cakewalk should be compatible so it should work. In my case, after going back to V11 no more problems. Then I re-installed V12 and the errors returned. Strange thing is, sometimes a specific project opens and then next time it doesn't. It's very unreliable. I also had to send a crash report and project to Cakewalk support. As Shawker says, Cakewalk is investigating. Hope this gets solved soon.