Tried opening IRT-00009.mxf and Vegas causes an access violation in mxflib.dll. Seeing as how this test file contains D10 essence I wasn't expecting I'd have much luck but this does indicate the mxf implementation isn't generic, even if the essence isn't supported shouldn't the code take a more elegant exit.
Test files are available from IRT, so far no joy with any of them including the Sony submitted ones, although the D-10 mapped 50Mbps files don't cause a crash.
Bob.