You can resolve this problem by manually deleting the Windows registry key that governs VAB's un-install process. You should find the Hyperception VAB key listed among the entries located at the following Windows registry path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr
entVersion\Uninstall\ You should verify that you have selected the proper key before deleting it from the registry -- if you used the default installation path then you will see a reference to \Program Files\Hyperception as the installation directory. Removing this key should allow the VAB installation to proceed. Regards, Steve