Runtime C++ Error... Grrrr.

I'm usually pretty good at sorting myself out with errors, but this on has me stumpted.

Running PE11. Win 8.1.

Quicktime updated.

No pending or outstanding Windows updates.

Nvidia graphics updated.

Removed and reinstalled PE11. Fresh install onto C drive, with a large amount of free space.

Software runs fine, until I try to adjust something. Gamma, Color, SmartFix - within the adjust tab.. etc. instant runtime error.

Anybody got anything else to try to knock this on the head? really need to get a project over with.

thanks all.