C# 3.0.3 failed to build GodotSharp solution

[aistrych]

Godot version: 3.0.3-mono

OS/device including version: Windows 10

Issue description: Clicking on "Create C# solution" (with VS Build Tools) lead to the fallowing errors:
failed to build GodotSharp solution
CSC(0,0): Invalid option 'portable' for /debug; must be full or pbonly

Steps to reproduce:
In Editor Settings -> Mono -> Builds set -> Build Tool: select "MS Build (VS Build Tools)".
Click "Create C# solution".

Creating solution with MS Build (Mono) works as expected.

[akien-mga]

The error sounds like it might be related to #18949, and #14822 where @neikeq commented:

For existing projects, you need to manually rename all <DebugType>full</DebugType> occurrences in your csproj file to <DebugType>portable</DebugType>.

@hpvb This should likely be mentioned in the 3.0.3 release notes.

[akien-mga]

Though wait before mentioning it in the release notes, it seems like the issue is the other way around here (portable used by only full supported?).

[neikeq]

What's the version of MSBuild and csc?

[DevMagicLord]

I got same issue on Windows, last mono is installed but Godot is unable to locate it and compile.

[aistrych]

It was my mistake. I've installed Microsoft Build Tools 2015 version 14.0.23107.10. It's a very old version I think. Installed newest one and it works like a charm. So I think I will close that issue :)