Hi,
This is known issue with Acrobat for several versions now, Adobe's current fix is just to update their software: http://kb2.adobe.com/cps/404/kb404597.html
The problem is with the application data being misdirected.
"The affected user has a redirected Application Data folder and as a result the network path containing the Application Data uses a UNC path that begins with \. This UNC path causes Acrobat 9.0 or Adobe Reader 9.0 to incorrectly parse the Application Data path and give the error message."
A potential Solution would be to go into the registry. Left Click type "regedit" and right click and run the program with "run as administrator". Go to Hkey_Current_User\Software\Microsoft\Windows\Current Version\Explorer\User Shell Folders and make sure see where "AppData" is pointing. If it is pointing to "%UserProfile%/Application Data" change it to point to "%UserProfile%/AppData/Roaming".