@jjgjr75: why not use the x64 trash vst?

Because the version I bought is dx only. They have two versions of Trash 1. One really early version and one version that came out after I purchased mine (I can only upgrade to Trash 1.03 even though it was up to 1.14 or something). I contacted them and they stated that my version of Trash cannot be upgraded and is dx only(to the latest Trash 1). The only way I can fix my issue is to buy Trash 2 or install Sonar 32 bit. It has something to do with how they changed their registration/authorization system as mine unlocks with a reg code instead of their newer system. I think it is kind of lame actually and may actually contact them again, do not want to go back to 32 bit at this point for anything

tfti, i didn't realise they had 2 version 1's (i still use v1 but a later x64 version) that's a bit sucky :-/

Using win 7 64 bit I tried recreate your problem. Couldn't do it. Loaded up ozone 5 vst v2  changed presets over and over. Did it again after adding the s verb DX version. Still no crash. Changed settings in both while a recorded audio track was running could not get it to fail. This was with one audio track and the effects on the master bus.
 
 

It doesn't happen in X2, just X3.  I never had any problem with Ozone 5, or Sonitus in Sonar X2, just this new X3.  I never had problems with Sonitus in X1, but I can't say about Ozone 5 as I bought it about a year ago and only used it with X2.  In earlier versions of Sonar (and I go back to V7) Sonitus, whether Sonar 32 bit or 64 bit, was always a VST plugin.  In X3, Sonitus is only accessed as a DirectX plugin.
 
 

The Sonitus Suite that comes with SONAR is either 32 or 64 bit DX plugin depending on the Version (32 or 64 bit) of Sonar you install.
If you buy Sonitus as a separate plugin package you get both DX and VST versions, both 32 and 64 bit.  http://www.store.cakewalk.com/b2ceuro/ProductInfo.aspx?productid=36-CWSF3.31-10E

Here is an update:  Read the saga below.  However, the Sonitus works fine in Windows 8.1  with X3b 32bit version.  I can't try the 64 bit version in 8.1 for the following reasons. 
 
I ran into problems with X3 64 bit in 8.1  I had originally installed in it Windows 8, and it appeared to install OK and was working.  I installed the X3b patch but ran into a problem and had to abort it.   I didn't try it again as Windows 7 is my "production" system.  I had a problem with some plugins with Win 7 and X3b so I decided to try it in Windows 8.1.  When I tried to start X3b it would not start and I had an error (don't remember what it was).  I decided to try reinstalling the X3b patch again but it aborted with an error.  I decided to reinstall X3a 64 bit in Win 8.1 but it failed with Dll OCX Regsvr32.exe Exit Code 0x3.  I did a search on that and found several references to that including several for Sonar but nothing that I found was a fix.  I uninstalled X3 and restarted the PC and tried a complete new install of X3a 64 bit in Windows 8.1 but it again failed with the Regsvr32.exe error.  I then tried X2 64 bit as it had previously worked OK in Win 8 (not 8.1) and it too failed to install with the same error.  Finally, I tried an X3a install of the 32 bit version and it installed OK, and the X3b patch also installed OK (32 bit). 
 
During my attempts to install X3a, I also tried it in Win 8 compatibility mode and that resulted in the same error failure. 

The regsrv 32 error is a failure of a 32bit dx file to be entered into the windows registry.

I'd suggest you need to ring cakewalk technical support.

mudgel
The Sonitus Suite that comes with SONAR is either 32 or 64 bit DX plugin depending on the Version (32 or 64 bit) of Sonar you install.
If you buy Sonitus as a separate plugin package you get both DX and VST versions, both 32 and 64 bit.  http://www.store.cakewalk.com/b2ceuro/ProductInfo.aspx?productid=36-CWSF3.31-10E

there's no x64 VST version, just DX:
 

Please Note: System Requirements
This download was intended for use with 32-bit versions of Windows 2000/XP. On 64-bit Windows Vista & Windows 7 it will only install as 32-bit plug-ins.

SONAR X1 Studio also includes the entire Sonitus Suite (as both 32-bit and 64-bit plug-ins) and is supported on Windows Vista and Windows 7.