Blender crashes on export to Collada (.dae)

I created a rigged mesh avatar for Second Life in blender (2.65) …and have made many before without any problems. But for some reason, when I try to export this particular one, blender crashes. I’ve tried everything and just can’t figure out what is wrong. Other things still export fine, I checked. It’s just this one file that doesn’t seem to want to work. >.< …and I didn’t do anything differently. Does anyone have any ideas as to what could be causing this?