mono develop fetal error gtk

I have tried unistalling everything unity gtk monodevelop i have also tried unity pro version to fix the problem but it is the same. fatal error gtk bullshit help me…

Watch the video:

Or do the following Steps:

  1. Install the latest version of .Net from the windows website
  2. Download the #gtk for .Net here: Redirecting…
  3. Reinstall the newest version for Unity