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monomonodevelop

I am using monodevelop and I am getting a "framework mono/.NET 4.0 not installed" error when I try to build

The fun part is, I do have .NET 4.0 installed, as well as all GTK#. I thought maybe I installed it in the wrong order or something ridiculous, so I uninstalled and re-installed everything. I even tried installing plain old mono, and then installing monodevelop, but I still get that same error.

Solution

  • IIRC MonoDevelop 2.4 had a bug that prevented it targeting the final released version of .NET 4.0. The fix should be in MonoDevelop 2.4.1.

    As a workaround, assuming you installed Mono 2.8 (which has 4.0 support), you can change your target runtime to Mono instead of .NET. Either

    • Change the default using the Tools -> Options menu, then the .NET Runtimes panel

    or

    • Change the target of the current project using the Project->Target Runtime menu.