Comment 14 for bug 1254253

Happens to be too on Linux mint 17.1 (equivalent to 14.04.01)

$ monodevelop --no-redirect
FATAL ERROR [2015-02-25 20:52:22Z]: MonoDevelop failed to start. Some of the assemblies required to run MonoDevelop (for example gtk-sharp)may not be properly installed in the GAC.
System.Exception: Toolkit could not be loaded ---> System.IO.FileNotFoundException: Could not load file or assembly 'Mono.Cairo, Version=4.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756' or one of its dependencies.
File name: 'Mono.Cairo, Version=4.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756'
  at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00000] in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00000] in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type) [0x00000] in <filename unknown>:0
  at Xwt.Backends.ToolkitEngineBackend.CreateBackend (System.Type backendType) [0x00000] in <filename unknown>:0
  at Xwt.Backends.ToolkitEngineBackend.CreateBackend[TextLayoutBackendHandler] () [0x00000] in <filename unknown>:0
  at Xwt.Toolkit.Initialize (Boolean isGuest) [0x00000] in <filename unknown>:0
  at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) [0x00000] in <filename unknown>:0
  at Xwt.Toolkit.Load (System.String fullTypeName, Boolean isGuest) [0x00000] in <filename unknown>:0
  at Xwt.Application.Initialize (System.String backendType) [0x00000] in <filename unknown>:0
  at Xwt.Application.Initialize (ToolkitType type) [0x00000] in <filename unknown>:0
  at Xwt.Application.InitializeAsGuest (ToolkitType type) [0x00000] in <filename unknown>:0
  at MonoDevelop.Ide.IdeStartup.Run (MonoDevelop.Ide.MonoDevelopOptions options) [0x00000] in <filename unknown>:0
  at MonoDevelop.Ide.IdeStartup.Main (System.String[] args) [0x00000] in <filename unknown>:0

Tried many things but nothing worked except mono-devel package.