Importing/Exporting Maya errors

[DRedshot]

Ok, sorry to bother you again, but when I said it works, it turns out it's a bit temperamental. I exported it as OpenCollada, and the error appeared as usual. However, this time it loaded in Model Editor. At this point I posted that it worked (above), however, after editing the model in modeleditor for a bit, It crashed. And every now and again it would crash. I tried reexporting it, and It would work for a bit, but as soon as I click the test button it would crash. I think the source of the problem is the error in my original post. Has anyone got any suggestions?
Thanks in advance