Me three...getting the same "error in user parameter list" message making a DVD video with files exported directly from Elgato EyeTV 2.3.1. to Toast 7.1. Just updated to Mac 0SX 10.7 last week. Previously did this process successfully with OS 10.5, Toast 7.1 and EyeTV 2.2.
Upgraded to EyeTV 2.3.1 only last night. Actually exported the EyeTV files with 2.2. After clicking Export found that the dialogue box was set on Documents Folder and MPEG Program Stream which is strange, anyway I changed it back to Desktop and Toast, which is how I remember leaving it. Then when the first EyeTV file opens in Toast it opens in the Copy Tab instead of Video, and I get a dialogue box asking if I'm sure the parameters of this file is OK--the parameters were frame rate and something else I think. I just clicked OK selected the Video Tab and dragged the file icon from the desktop into there.
I've thrown the files exported witih 2.2. and exported again with 2.3.1, still getting Mac OS Error = -50 if I try to burn a Disk Image.