"bad weighting" error message from model checker

[spiderfriend]

i got this error message when running a .dae through the model checker.


i've never gotten this message before, and i have used the same script for ripping all of the other models from this game. what could be wrong and what can i do to fix it? (mediafire link since the site says it's too big to attach, includes .dae file and .blend file)