Compiled with Python version 2.5.
Checking installed Python... got it!
importing into blender ...
Traceback (most recent call last):
File "<string>", line 229, in my_callback
File "<string>", line 63, in Import
File "<string>", line 189, in loadMaterials
IndexError: list index out of range
Hard to say without seeing any code, but “list index out of range” means you’re trying to access a list item that doesn’t exist. Usually because, for example, you use list[5] in a list with 5 items, and the list index starts at 0. ie. the 5th item will be list[4] since the first item is list[0].