dgrace
I am also getting the crashes every time I insert an AVOX 4 plugin in SONAR X3c.

Yes, we are aware of these. The VST3's are crashing SONAR X3c but the VST2's work just fine. This should suffice as a workaround until we understand what's going on.
 

conanliquid
When I updated I got loads of CLSID problems. Waves 9 could only open one plug in before crashing. If I deleted a Waves plug in from the FX Bin Sonar crashed. T-Racks CS would crash Sonar, and since updating T-Racks standalone crashes my PC, no idea why but update was the only change I made. True Pianos kept hanging in VST scan. Arturia Spark crashes to desk top if I open it up in a project. MiniMonsta that ran absolutely fine before the update now spikes CPU really badly if I change any settings on the synth and is now unusable (one of my go to synths). I was at such a standstill I had to roll back to X3b. Hope this helps. I can't unfortunately recreate any of these crashes now due to the rollback obviously.

Did you do a complete reset and rescan when you applied the X3c patch?

boredmonkey
MeldaProduction's free VST3 MDrummer Small hangs X3b and X3c scanner.   It stops at mDrummerDemo1out.
 
http://www.meldaproductio....php?id=MDrummer+Small

Confirmed, this plugin is definitely having some issues with our scanner. Will look into this further.

Dan Gonzalez [Cakewalk]

conanliquid
When I updated I got loads of CLSID problems. Waves 9 could only open one plug in before crashing. If I deleted a Waves plug in from the FX Bin Sonar crashed. T-Racks CS would crash Sonar, and since updating T-Racks standalone crashes my PC, no idea why but update was the only change I made. True Pianos kept hanging in VST scan. Arturia Spark crashes to desk top if I open it up in a project. MiniMonsta that ran absolutely fine before the update now spikes CPU really badly if I change any settings on the synth and is now unusable (one of my go to synths). I was at such a standstill I had to roll back to X3b. Hope this helps. I can't unfortunately recreate any of these crashes now due to the rollback obviously.

Did you do a complete reset and rescan when you applied the X3c patch?

 Yes Dan. I tried it 3 times. Rollback, reinstall X3c, reset, rescan. Same problems. I even completely removed X3 and reinstalled, reset and rescan. Minimonsta problem seems to be intermittent. 

 

conanliquid
 
Yes Dan. I tried it 3 times. Rollback, reinstall X3c, reset, rescan. Same problems. I even completely removed X3 and reinstalled, reset and rescan. Minimonsta problem seems to be intermittent. 

I'm sorry that you had this experience. If you update and run into these problems again feel free to PM me about it and we can take it a step further to try and troubleshoot these crashes. If you do stumble across any of these crashes then feel free to send them my way anyway.
-DG

Dan Gonzalez [Cakewalk]

dgrace
I am also getting the crashes every time I insert an AVOX 4 plugin in SONAR X3c.

Yes, we are aware of these. The VST3's are crashing SONAR X3c but the VST2's work just fine. This should suffice as a workaround until we understand what's going on.
 

What happens to the VST2 to VST3 migration users in X3c? I'm still on X3b so I have not tested that recipe.

I would suggest sticking with the AVOX VST2 plugins. The AVOX VST3 plugins have an issue that we are aware of. This is not the behavior of all VST3 plugins, just the AVOX ones.

A lot of the LePou plugins cause Sonar to be very unstable:
http://lepouplugins.blogspot.co.uk/
 
In particular, the amp sims (LeGion, LeXtac) which I usually use in conjunction with LeCab2.

I have had several problems with glisseq from voxengo (64bit - latest version).
Some projects the are unstable, some won't open (crash emmediately on open), but most just have certain tracks/busses that won't play.  
 
In order to reproduce this, you need many instances of glisseq on many tracks, clips,  and busses.  Here is more info on my specific issues:
http://forum.cakewalk.com...my-setup-m2927216.aspx

I had problems with DMG's Equality. However, I deleted the 32 bit plug and installed their latest 64 bit plug in a 64bit plug location.  No more problems.  One of my favorite eqs.