Finally i solved this problem. It was caused by a video codec.
This is the procedure in case someone need:
– in the windows registry (start > run > regedit) find the following key “HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Drivers32”.
– find all the video codecs installed, they begin with “vidc.”, and disable all the entries but one by adding a semi-colon to beginning of the value (double click the name of the codec to modify its value like this “;codecname.dll”).
You need at least one codec enabled to let AE run, so leave enabled one codec you know it surely works, eg Cinepack – vidc.cvid.
– try to launch AE, if it runs, you’ve found the problem
– now you can re-enable one codec per time until you find the one corrupted that blocks AE
– when you find the corrupted codec you can leave it disabled (with semi-colon at the beginning of the value) or uninstall it
Same procedure works with Premiere CS3 too.
— THIS IS FOR WINDOWS XP, I DON’T KNOW IF IT CAN CAUSE PROBLEM OR WORKS ON VISTA —
Hope this help.