I have a project which I started in X2a which I cannot use in X3, as I get a crash every session. I have given up on X3 until it receives a patch and am finishing the project in a very, very stable X2a. I have sent every error report to Cakewalk.
I am very unimpressed that the UAD / Waves bug was not discovered before X3 was released. I don't see how that could have been missed.
You could say I am disappointed and wish I had waited to buy X3.