I have the same problem with V-vocal crashing.  I am starting a ticket with support.

Does it crash on old projects, new projects or both?

RMCALL
I appreciate what you are saying, however I finally gave up and did some exploration of Melodyne yesterday, and ended up using that instead of V-Vocal...  it worked okay yesterday, well.. I thought... except SONAR will not boot up at all today.  I am now legibility sorry that I bought X3, gentlemen it is NOT ready for prime time!!  I wasted the entire day, the only day I had to record.  Client was really unhappy... and I lost money... only problem is I can no longer use X2 as it crashes now as well.  It's Sunday so I am assuming tech support is closed...
 
NOT HAPPY!!!!
___________________________________________________________________________________
A fatal error has occurred.
Module: c:\program files\common
files\vst3\celemony\Melodyne\melodyne.vst3
 
a crash dump file has been created here"
c:users\audio\appdata\roaming\Cakewalk\Sonar X3
Producer/MiniDumps\_10202013_133558.dmp
Exception Code: c0000005
Address: 0000000102545E12:0000000000000065:0000000000000065
As a result of this error SONAR is about to exit abnormally.
Should Sonoar Attempt to save a recovery copy of your work?
________________________________________________________________________________
 

Melodyne is very stable indeed with X3 there is definitely something bad at your end. I suggest you install X3E patch. Make sure melodone is up to date via its auto update facility. Then perform a RESET and then a rescan of your VST's.

Then run windows update several times including most of the optional updates.

If you keep having trouble you may consider more drastic action. Back up your partition, wipe it and reinstall your OS, but see if new projects rather than existing projects are effected first. Or you could do a clean removal and reinstall of Cakewalk apps but it might not be as effective.

Please make sure you have a backup strategy in place. It helps you and your customers.

... and hope this helps.

Ah jeeze I fell victim to somebody raking up an old thread.... Whatever..

What Alex says. Really seems like an installation issue. I'm one of the people who likes V-Vocal and still use it as well as Melodyne, so one of the things I really liked about X3 was V-Vocal being far more stable.
 
When you re-install, make sure no virus protection is on. Also, the reset/re-scan is essential when updating X3.

Similar advice with vvocal then although an OS reinstall may be a little too drastic in the other posters scenario. Vvocal does very occasionally crash I notice there isn't much you can do about it. I dont expect much support from Roland in this area any more. Cake is now owned by Gibson....

And what Craig says mostly...

Have to say that VV is better for me in X3 compared to the crash fest that is could sometimes be in 8.5. I haven't used it a lot, but it seems far more stable and it still does some things better than melodyne, so I'm happy to have both. It would be nice to be able to assign a shortcut key, but other than that it's all good here.
 
 

I seem to recall Melodyne working better if Sonar is launched with Run As Administrator (don't hold me to that, as the lights are dim in many corners of the cranium room), and I wonder if that might be true for V-Vocal, as well.
 
And one of those earlier posted errors, from back in October, looks like an access violation, which again is a privileges thing, and often the result of either not installing and/or not running with Run As Administrator.
 
I would like to see the folks with this problem launch Sonar with Run As Administrator and see if that resolves this issue.
 
Bob Bone
 

I also recall that V-Vocal was most stable for me when I worked with small sections of audio, rather than lengthy ones.
 
Bob Bone
 
 

"Run as Administrator" does not fix this problem.  As far as the suggestion to re-install the OS, it has taken me 3 weeks to get this far (X1 under XP to X3e under Win7-64).  Uh, no.  Not going to happen.  As far as "small sections", it still crashes on a 4 bar chunk.  My theory it is a ram problem, for I only have 4 gigs, and can't order anything until I return from Colorado.