I’ve been able to export out Gmax mesh files as md3 files using an export file from Tempest, but when I try to import them into Blender I get an error message. I have the following files five files md3.pyc, md3_export.py, md3.py, md3import123.py, and md3import.py installed in my Blender scripts folder (i.e. : C:\Documents and Settings\myname\Application Data\Blender Foundation\Blender.blender\scripts). While in Blender under File\Import I try to import a given md3 file (for example a 3D box) and get an error message even time. I have python 2.6.1 and Blender 248.a installed. A friend who has an older version of python and Blender 248.a is able to import into Blender with no problem using the same Tempest file to export from Gmax into md3 files and the same md3 importer files in Blender. Any ideas, suggestions, or better exporters\importers will be appreciated. Thanks.
well, it must be the python version then 
Try python 2.5.2 that should work 