i've had sony vegas for a few months now and it's been working fine but then this morning it wouldnt build perks for my video clips so i uninstalled it and reinstalled now it's all gone to pot.When i try to import one of my files(format-m2ts) it only comes up with the audio but no video do i need to change the settings on sony vegas 9 to make the video compatible with sony vegas 9. This format worked fine untill i had to reinstall the program now it don't work