DVDFab disables Pioneer DVD?



I just bought DVD Fab after successfully using it in evaluation mode.

Now, when I try to copy main movie from a Toshiba DVD Rom SD R5002 to the Pioneer DVD Rom DVD 120R, when I get to the final screen, it fails.

When I look at hardware, the Pioneer DVD no longer shows up on My Computer or in the Hardware Device Manager!

When I reboot, the Pioneeer is there until I use DVD Fab.

I swear I used this method before buying it.

Any help would be appreciated.