Today I uninstalled Adobe 9 and tried to install Adobe Acrobat X Pro on a Win7Pro64 machine. When I try to start the program I get "an internal error occurred," then "Runtime Error!" etc. Tried first to "repair" the installation. No go. Tried then to install the update 10.1.2. Still get "an internal error occurred" but the "runtime error" does not appear, still the program does not start, or, rather, if you go to task master you see it running in the list but it does appear on the screen. Uninstalled everything. Tried reinstalling Pro X (from disk), now back to both internal error and runtime error. Help please.