I move this topic back to help section. And the version is the most recent 0.17 from the application manager so it should be compatible to my OS. I don't think that the experimental version is needed to use a basic function like open or import. Your version is not a stable version either. The fact ...

It is not just the 'new assembly' stuff that is not working. It is the basic 'open' command. I was just able to work around it by double clicking the .fcstd but that is not an option for the assembling, since more than just one file is needed. I didn't changed anything manually since I used the prog...

OS: Linux Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.5235 (Git shallow) Build type: Release Branch: (HEAD detached at 549e8ec) Hash: 549e8ec8070b6e3064d606010a26e8033d239a99 Python version: 2.7.12 Qt version: 5.11.2 Coin version: 3.1.3 OCC version: 7.3.0 Locale: German/German...