Photoshop CC r6025 pure virtual function call

Question

I recently signed up for Creative Cloud and shortly after that I started to recieve the r6025 pure virtual function call error with PS CC crashing. This will happen with both the x86 and x64 versions of PS CC. It does not happen every time, only about 30%-40% of the time. Usually, but not always, a restart of the program solved the problem.I performed an unstall of PS CC but that did not solve my problem. Prior to switching to Creative Cloud I had no problems whatsoever with PS CS6. This issue started after installing CC and updating PS CS6 to Photoshop CC. I do not think this is a hardware or OS problem but FGOS I an running the following:
OS - Windows 8 Pro x64
RAM - 16GB DDR3
Video - NVIDIA GeForce GT 640 with 2048 MB of VRAM
CPU - Intel Core i7 2600
Plug-ins - onOne, Nik, Imagenomic, Topaz Labs, Alien Skin, Unified Color and a few others. All of these were installed and running fine before the CC switch.
Does anyone have any ideas as this has become very frustrating for me.
Thanks

Answer 1

Thanks guys. I'll reply to your messages in the above order.
System Log -
For all these photoshop.exe is the faulting application both x86 and 64-bit. I havent seperated them out (x86 vs x64) but casn do that if you want. I mostly use the x86 version of Photoshop simply because a couple of my favorite plug=ins don't work in the 64-bit version.
Faulting modules -
unknown - 2 times
MSVCR100.dll - 9 times
KERNELBASE.dll - 3 times
MultiProcessorService.8BX_unloaded - 1 time
CreativeCloud.exe showed up once as the faulting application and the faulting module was VulcanWrapper.exe.
FGFOS the above are a mix of Photoshop CS6 and Photoshop CC. That came about because I was running PS CS6 when I signed up for Creative Cloud and my version of CS6 was upgraded to the Extended version. About a week ago I uninstalled then reinstalled Photoshop and this time the version was Photoshop CC.
With regard to the plug-ins I use the vendor's installation program. I have a few others that are just an *.8bf file that I copied to Photoshop's plug-in directory. Most, if not all, of this type of plug-in are my oldest plug-ins and are only used with Photoshop x86. I'll move these from Photoshop's plug-in directory first just because they will be the easiest to work with. If I get a crash while they are gone then I'll remove my other plug-ins.
Again, thanks guys I do appreciate this. I've never run into this particular issue before so it a good, albeit frustrating, learning process.