I'll save the long back-story...but I just loaded 8.5 (plus all the updates) into Win7 64 bit for the first time ever.  V-Vocal won't even load when I right click and try to use it on a clip.  I get some sort of Direct Show blurb.
 
Known problem with a know fix?
 
Thanks guys.

The actual text of the "DirectX blurb" would probably be helpful. Are you running the 32-bit or the 64-bit version of SONAR?

I was too lazy to restart the machine to get better info...so I did this morning:
 
"DirectShow Error (0x8004022a)  This filter does not support the current audio format.  It may require a different number of channels (e.g., stereo instead of mono) or a different sample rate."
 
Win7 64 Bit.  Sonar 8.5 64 Bit.  All things 64 bit.  Original tracks were recorded in Sonar 5.xx at 24/96.
 
I just figured out what was causing the problem.  If the Cakewalk Compressor/Gate is in the FX bin, even if it's not activated, V-Vocal won't work.
 
What the hell is that??

Somebody shut this muppet up!!