CSC: error CS0041: Unexpected error writing debug information — 'Operation is not supported on this platform.'

Question

Just downloaded Visual Studio Professional for Mac and I cannot seem to build anything as I always get the same error:

/Library/Frameworks/Mono.framework/Version         


        

Answer 1

This is a bug that will be fixed shortly. Meanwhile, you can edit your csproj file to add

portable

after the line with full or pdbonly

Essentially, we want the DebugType property on Mac to be portable, which is supported by Roslyn's csc.exe on non-windows platforms, instead of pdb.