Hello Necolatis,
well, I must have been really stupid this time. Did not make a copy of the original file, Because I was in a hurry.
All I know is, there is some test against the OS it runs on, and obviously wine tells something not expected in the python script.
It has to do with the capital-letters or not.... ( windows or unix difference I think )
I searched for what I changed but cannot get it back.. realy sorry for that.
All I know, since last updates of blender, I am stuck in exporting to ac, but via the waveform format, obj, it works fine for me.
Silly thing, sometimes when doing a reexport-import-acexport, the names of the parts change, and you have to check the xml file.
But thats a minor issue, even no issue to me.
The new method as explaned for the textures blows my head.... but I realy don't mind for I have a good alternative.
EDIT: did a check against the new version of the importer, but they are too different.