Upon import, I get an error message that says Vegas doesn’t recognize it as a supported format or the file may be corrupt. The files were recorded using a Panasonic HPX500 via HDSDI on a Black Magic shuttle. Could the fact that there are (4) channels of audio be an issue? Out of a dozen or so files, only a couple will import. However, the video stutters and the (4) tracks of audio have been combined into one mono track duplicated (16) times. Yikes!