Good question. I'm being told that some problems including CTD's are bridge issues and the break to 64b as required is problematic for all those 32b VSTs we might have actually figured out and like to use. Some might discard them, others - not so much.
I've already installed my DP,Z3/2,Rap, etc twice in the last two months and it's getting a bit tedious. Silly me, I installed 32b versions which had all worked OK expecting to bring up a 32b Sonar before even looking into the limited options of 64b vst's which will merely do the same things as 32b versions anyway.
Do you have any other VST x64's to confirm ? If not, I'll 'put it on the list' .
I'm real gun-shy about CW VST updates as they generally have lost all the additional banks/presets, etc. It's a big deal for me and takes about a week to sort out usually. Not fun.