That's a message that you seem to get, sometimes, when for WHATEVER UNKNOWN REASON, Studio doesn't "like" the disc that you're importing. And from what I've seen, Studio can be pretty darned stubborn -- If it decides to throw an error message like that one, it's bang! game over...it simply CANNOT be enticed into importing the disc.
When I've encountered that message, I've fallen back to the old "mencoder method" that I used in S8/S9, and those same discs/titles were converted to MPEG2 "just fine".
BittMann