This problem is has to do with "security" (AKA file permissions) for some of the VAB files. I am not aware of what may have caused the problem. As the USER check to see what problem files exist. Then as the ADMINISTRATOR check the "Security" tab in the file's properties and you'll find that the USER is unable to modify/read/see/etc that file. Changing the setting to match one of the "OK" DLL block files should correct the problem. Alternatively you can run the command line script that the installer runs: cacls "C:\Program FIles\Hyperception\VABINF" /T /E /G Everyone:F Assuming you installed in the default directory, you should be able to drop to a command prompt and issue this command. It will scroll the name of every file in the given directory and all subdirectories. It should reset every file.