Adobe Audition CS6 Crashing
An und handled execption is never a good sign. That means its either a bug in the application, in that case there is usually not much you can do other than sending Adobe a detailed report about the crash. Another possibility can be a malfunctioning driver or a hardware failure.

Maybe you have recently installed something or updated a driver? Reverse that installation and see if the problem persists.
Also check your RAM, something that is the cause for a lot of random crashes is corrupt RAM.

You can check the health of you RAM with a tool like memtest86+. Best to run it over night as it needs many iterations to really ensure healthy RAM.