Oh, ok. I was searching and reading a lot in the forum the last days, but did not find the solution.
Your hint explains it, many thanks for that!
Yes, i know the option with generating the (wireframed) skin file from the garage, but that do not work for me. I use Linux since the mid 90s. The game works really fine with WINE (Staging), but copy/paste of graphic files via the wine clipboard do not work yet (only text works). And sadly an option of saving the skin template from the garage to a file do not exist. It's the same with the 3D Editor.
I think i will ask for an updated template.