SharpDevelop error: "The tools version '12.0' is unrecognized..."

Question

I've been developing a vb.net project using Excel-DNA for the last few months using SharpDevelop and all of a sudden, when I open my project as usual, I have this error:

The tools version "12.0" is unrecognized. Available tools versions are "2.0", "3.5", "4.0". C:\path\to\file.vbproj

I'm gessing the falty codes is this part: <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">. As far as I can go in my Mercurial history it has always had this value.

Any idea of what could have created the problem? I had installed Visual Studio to test it out and see if the investement was worth it and uninstalled it lately, could it have something to do with that?

Answer 1

Looks like the MSBuild .target files necessary to support ToolsVersion 12.0 were uninstalled together with Visual Studio.

However, they are also available as a standalone download: Microsoft Build Tools 2013