Hello and thanks for your help.
I tried your suggestion but after that, it keeps crashing at all the Landvermesser Parts...
I tried a bit and when I delete the whole Landvermesser files it crashed without a path to search for. When I delete or rename the whole "Coatl Aerospace" Folder it loads with no problems.
I gonna download your Mod again and try to install it from scratch. If that doesn´t help I will reinstall KSP completly new.
Is there something I can do for you, regarding problem solving? It seems that it´s only at my end so far so there could be no need till now.
Regards
Griffon26