1st. Have you tried running the patch as administrator?
2nd. Did your try to run patch with any mods enabled? If so, disable all mods, then patch, then re-integrate.
3rd. Does WOFF run in its current state pre-patch? Worst case, you can always do a fresh install and start from scratch. You can backup and restore your settings / pilots via Robert Wiggins great WOFF backup utility!
I'm by no means the go to source for troubleshooting, but figured i'd put my 2 cents in since i'm awake. Give it till morning/afternoon tomorrrow (Today? Lol) , someone more knowledgeable than my humble self will likely contribute.