I don’t know why you can’t but ig you look at the error message I supplied you will see the dll that is used. It is an ac3 decoder. It says so itself.
More over, I CAN import ace mpeg2 if it is the program stream. it is only the transport stream that is affected by the bug. Unfortunately program stream mpeg 2 video is very buggy and prone to garbaled frames and crashes.
You have obviously never loaded a 5 minute mpeg2 file into vegas or 50 Mpeg 2 files or you would know I am right.