XeNTaX

I'm getting this error after editing a bit to allow more models to be exporting/imported. I'll provide more info if needed, I'd post them now but I don't even know what to post lol
Being new to max scripting can only get you so far before needing help...

w1 is not defined, !=0 statement won't protect you from undefined variables (0 != undefined).
You will need to define said variable, or use appropriate expression.

So it should be