I am unable to capture from a Mini DV metal evaporated digital videocassette from radio shack. I have never used one of these tapes before. I am successfully capturing from numerous other types of digital video cassette tapes. I'm using Adobe Premiere Pro CS4. My computer is a Dell with Windows Vista OS. My camera is a Sony DCR-HC26. When I attempt to capture with this tape, it plays on the camera, and shows on the computer that capturing is occurring, however there is a black screen on the computer with no sound.
I would try ScenAlyzer Live (there is a trial, but it watermarks every few frames), and see if it will read from these tapes. Many use it, instead of the Capture module in PrPro for the Scene Detect features.
Have neither used, or even heard of these tapes, so I cannot help you directly there.
Good luck, and let us know how ScenAlyzer performs with them.
I would put one of the regular tapes that you have captured successfully into the camera and see if you have accidentally changed some settings.