Hello, my setup is somehow broken.
It compiles fine and the resulting plugin worked also in KSP. But then after adding a code snipped which iterates over a list I get:
[ERR 15:12:28.039] ADDON BINDER: Cannot resolve assembly: System.Collections, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[ERR 15:12:28.040] ADDON BINDER: Cannot resolve assembly: System.Collections, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
[EXC 15:12:28.042] FileNotFoundException: Could not load file or as