From the info so far, I'd guess that something (probably a shell extension; possibly but not definitely involved with Photo-Paint) is corrupting the stack within the dopus.exe process. That can then cause some later operation, sometimes by code that is completely innocent, to crash.
It could be something else in the same right-click menu, and maybe something which is only shown for the file type you are right-clicking?
Crash, exit or high CPU usage when right-clicking certain files is a good place to start.