Mac 10.6.8, Acrobat X 10.1.2
Why doesn't AcroX retain any Quick Tools that I've added to the menubar whenever I restart?
Sorry for the trouble you're having.
Sounds like your Acrobat preference file isn't being written over properly.
Try the following:
If your preferences now stick, it was your old prefs file and you can trash it.
Let us know how it goes!