OK i was able to suss out the problem.
Here's the situation. Versions 3.57 and 3.58 don't support the 160x120 format that the i-Platinum screen uses. You can convert it to a lower setting, say 120x120 and it will work but obviously not full screen.
v4.0 of the AMV Convert tool will convert to 160x120, however for whatever reason you can't set the quality rates. This causes problems as at 'high' setting my i-Platinum skips quite a bit to the point where its rather unwatchable on most clips.
v4.03+ of the AMV Convert tool has a 'bug' where 160x120 mode is actually being converted as 178xwhatever which causes the i-Platinum to crash after a few seconds.
Solution? Best I could find
was this post right here which tells you how to modify v3.57 to convert to 160x120.
Maybe at some point they'll "fix" the 160x120 problem in the AMV tool. Not sure why they wouldn't catch it.. from what I can tell the i-Platinum is a pretty popular model. Who knows.