I have just installed a new TDK 4X multi Burner. I used DVDShrink to create a Nero image file. When I use Decrypter to burn the file on a -R blank it writes the lead in but throws an error on writing the image file: Cannot Write Medium - Incompatible Format. If I switch to a +R blank, it writes the disc perfectly. Talked to TDK and they suggested upgrading the firmware to rev. 1.0A. Did that but it made no difference. Imation 4X blanks being used in both cases. Anybody seen this problem before?