Difficulties with MDX exporter (3dsmax)

Whenever i try to run the MDX exporter script I get an error that says:

"Compile error: no outer local variable references permitted here: add_anim_rollout
-In line DestroyDialogue add_anim_rollout"
I am using 3dsmax 4, could someone tell me whats going on?

upgrade to 4.2, the scropt only supportsd that and 5.

i thought that might be it, good thing it supports 4.2, I wouldn't want to have to get 5. Thanks a bunch.