title: Error: *.csproj could not import "$(MSBuildBinPath)\Microsoft.CSharp.targets" on MonoDevelop
body: <p>So, I have MonoDevelop v5.7 on Linux Mint 16.
  I create new C# ConsoleProject with default code on it</p>
  
  <pre>
  using System;
  
  namespace Lab1
  {
      class MainClass
      {
          public static void Main (string[] args)
          {
              Console.WriteLine ("Hello World!");
          }
      }
  }
  
  </pre>
  
  <p>and try to build it F7.
  After that I have the error: Error: /../../Lab1/Lab1/Lab1.csproj: /../../Lab1/Lab1/Lab1.csproj could not import "$(MSBuildBinPath)\Microsoft.CSharp.targets" (Lab1). 
  Does any one have any suggestions?</p>