When user right-clicks inside a fillable .pdf (i.e. as if to rt-click/copy or rt-click/paste) she gets the error "Adobe Reader has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." This occurs 100% of the time when right-clicking. Unfortunately, Windows hasn't notified me of a solution yet... 
Event Viewer info:
Faulting application name: AcroRd32.exe, version: 11.0.2.0, time stamp: 0x511eacd6
Faulting module name: AcroRd32.exe, version: 11.0.2.0, time stamp: 0x511eacd6
Exception code: 0x40000015
Fault offset: 0x000b7ea0
Faulting process id: 0x15f4
Faulting application start time: 0x01ce4d860e1f16e2
Faulting application path: C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroRd32.exe
Faulting module path: C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroRd32.exe
Report Id: 4dbe18ec-b979-11e2-87e7-b4b52f7b910a
Per other forum posts, I have tried uninstalling/reinstalling reader and then running EULA.exe and I also disabled Protected Mode. Problem persists.
It should be noted that Reader also crashes at other (non-right click) times as well, but without knowing exactly when it occurs, I'm unable to isolate those specific reports from the 100's of other reader crash reports in event viewer. I've asked the user to document the date/time that reader next suffers a (non rt-click) crash.