I'm having problems starting frameserving to TMPGENC w/XP. I get the error message: "can not open file or unsoportted format". I'm using VFAPI 1.04b, VDub 1.4 and TMPGENC 2.54. I tried the #4 tip from the frameserver FAQ but I wasn't able to select the DShow mmedia reader priority and increase it. What could be happening in my system to be unable to perform this task?