4

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.

gentuba
  • 103
  • 1
  • 1
  • 5

2 Answers2

8

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.
Mikayla Hutchinson
  • 16,113
  • 2
  • 44
  • 50
  • I found a great shell script to install latest mono and monodevelop here: http://www.integratedwebsystems.com/2011/03/monodevelop-2-4-and-2-6-beta-install-script-for-ubuntu-fedora/ – Jeffrey Cameron May 25 '11 at 01:03
  • Thank you so much! Spent hours trying to figure out why MonoDevelop would only target MS .NET when I explicitly set Mono as a build target. Turned out I didn't add it as another .NET Runtime in the Tools -> Options. – d_d_t Jun 27 '14 at 03:28
3

you could easily change the framework under which tyour application is running to allow MonoDevelop build your's successfully by doing the following:

  • open menu "Project"
  • choose Application options
  • from "General" tab, change the "Target framework" to be "Mono / .NET x"
Muhammad Soliman
  • 21,644
  • 6
  • 109
  • 75