MonoDevelop fails to start due missing Mono.Cairo

[Anton Sudak]

libmono-cairo4.0-cil is installed but monodevelop still fails to launch.

$ monodevelop --no-redirect
INFO [2016-02-04 11:27:32Z]: Starting MonoDevelop 5.5
INFO [2016-02-04 11:27:32Z]: Running on Mono 4.2.1 (Debian 4.2.1.102+dfsg2-5ubuntu1) (64-bit)
INFO [2016-02-04 11:27:32Z]: Did not find previous version from which to migrate data
INFO [2016-02-04 11:27:32Z]: Using GTK+ 2.24.29
ERROR [2016-02-04 11:27:32Z]: 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) <0x7fb8a8531670 + 0x000a4> in <filename unknown>:0
  at System.RuntimeType.CreateInstanceMono (Boolean nonPublic) <0x7fb8a837f560 + 0x00124> in <filename unknown>:0
  at System.RuntimeType.CreateInstanceSlow (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) <0x7fb8a837f510 + 0x00049> in <filename unknown>:0
  at System.RuntimeType.CreateInstanceDefaultCtor (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) <0x7fb8a837f2b0 + 0x0005c> in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) <0x7fb8a829fdb0 + 0x000a1> in <filename unknown>:0
  at System.Activator.CreateInstance (System.Type type) <0x7fb8a829fc60 + 0x0000e> in <filename unknown>:0
  at Xwt.Backends.ToolkitEngineBackend.CreateBackend (System.Type backendType) <0x41c056f0 + 0x00079> in <filename unknown>:0
  at Xwt.Backends.ToolkitEngineBackend.CreateBackend[T] () <0x41c05690 + 0x00027> in <filename unknown>:0
  at Xwt.Toolkit.Initialize (Boolean isGuest) <0x41c04100 + 0x0014f> in <filename unknown>:0
  at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) <0x41c03c80 + 0x00187> in <filename unknown>:0
  --- End of inner exception stack trace ---
  at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) <0x41c03c80 + 0x0020f> in <filename unknown>:0
  at Xwt.Toolkit.Load (System.String fullTypeName, Boolean isGuest) <0x41c03760 + 0x0008f> in <filename unknown>:0
  at Xwt.Application.Initialize (System.String backendType) <0x41c03630 + 0x00023> in <filename unknown>:0
  at Xwt.Application.Initialize (ToolkitType type) <0x41c03050 + 0x00017> in <filename unknown>:0
  at Xwt.Application.InitializeAsGuest (ToolkitType type) <0x41c03000 + 0x0000f> in <filename unknown>:0
  at MonoDevelop.Ide.IdeStartup.Run (MonoDevelop.Ide.MonoDevelopOptions options) <0x41bf8000 + 0x005b3> in <filename unknown>:0
  at MonoDevelop.Ide.IdeStartup.Main (System.String[] args, MonoDevelop.Ide.Extensions.IdeCustomizer customizer) <0x41b94ee0 + 0x001d3> in <filename unknown>:0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: monodevelop 5.5.0.227-1
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Uname: Linux 4.4.0-2-generic x86_64
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Feb 4 11:31:07 2016
PackageArchitecture: all
SourcePackage: monodevelop
UpgradeStatus: Upgraded to xenial on 2016-02-01 (2 days ago)

[Tom Hindle (3-launchpad-hindlemail-co-uk)]

see also https://bugs.launchpad.net/ubuntu/+source/monodevelop/+bug/1541950