I had version 7 running and wanted to upgrade to version 8.1, i couldn't so I uninstall ver. 7, now I can't install either one.
I always get a 1402 Error, Could not open Key 'unknown\Acroexch.RMFFile\Shell\Read\command', this key doesn't exist in my register, I've tried to create one in HKEY_CLASSES_ROOT\unknown, but did not work, I had to install ver. 5.
Any help with this error?