That's a pretty standard XviD AVI with MP3 audio.
Something is messed up in your filters. Can you try to render the file
using G-Spot and tell us what filters it is using?
Also, MC can generate a logfile. Go to Help -> Logging and enable Output to Log File. Then make sure that ALL Event Types are checked, and reset the log file. Then try to play one of the AVIs that make MC crash. Then go back into MC and open back up the Help -> Logging dialog, and click the "View" link next to the Previous Log item. This should pop up the logfile in Notepad, and you can copy and paste it here too.
When you do that, be sure to enclose the logfile in the Code Tags on the forum, or it'll be impossible to read. You can do this by selecting the text after you paste it in, and then click the # button in the Forum software's toolbar.