Hi Ventilator!
I finally came around to work on my project again. Well I tried to export a very simple level though I when exporting I get an error in export_gs_map.py on line 293 saying
if f.image != None:
ValueError: face has no texture values
Seems as if it tries to access a non-existent member of the face-class! Might you have an idea what the problem might be?
Edit: Oh yeah thats only the case for level geometry, objects with the "__"-prefix to be specific.