This is what I get when I try and run monodevelop on xenial. Is this a packaging bug? Setting up monodevelop (5.5.0.227-1) ... Processing triggers for libc-bin (2.21-0ubuntu5) ... build@hindlet:~$ monodevelop build@hindlet:~$ monodevelop --no-redirect INFO [2016-02-02 18:23:14Z]: Starting MonoDevelop 5.5 INFO [2016-02-02 18:23:14Z]: Running on Mono 4.2.1 (Debian 4.2.1.102+dfsg2-5ubuntu1) INFO [2016-02-02 18:23:14Z]: Did not find previous version from which to migrate data ERROR [2016-02-02 18:23:14Z]: Gtk-Message: Failed to load module "canberra-gtk-module" tack trace: at Gtk.Application.gtk_init (System.Int32& , System.IntPtr& ) [0x00000] in :0 at Gtk.Application.do_init (System.String progname, System.String[]& args, Boolean check) [0x00000] in :0 at Gtk.Application.Init (System.String progname, System.String[]& args) [0x00000] in :0 at MonoDevelop.Ide.IdeStartup.Run (MonoDevelop.Ide.MonoDevelopOptions options) [0x00000] in :0 at MonoDevelop.Ide.IdeStartup.Main (System.String[] args, MonoDevelop.Ide.Extensions.IdeCustomizer customizer) [0x00000] in :0 at MonoDevelop.Startup.MonoDevelopMain.Main (System.String[] args) [0x00000] in :0 INFO [2016-02-02 18:23:14Z]: Using GTK+ 2.24.29 ERROR [2016-02-02 18:23:14Z]: 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) <0xf59ae730 + 0x000a3> in :0 at System.RuntimeType.CreateInstanceMono (Boolean nonPublic) <0xf57dfc60 + 0x00149> in :0 at System.RuntimeType.CreateInstanceSlow (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) <0xf57dfc00 + 0x00048> in :0 at System.RuntimeType.CreateInstanceDefaultCtor (Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, System.Threading.StackCrawlMark& stackMark) <0xf57df980 + 0x00056> in :0 at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) <0xf56e0330 + 0x0009f> in :0 at System.Activator.CreateInstance (System.Type type) <0xf56e01c0 + 0x00025> in :0 at Xwt.Backends.ToolkitEngineBackend.CreateBackend (System.Type backendType) <0xf46fefe0 + 0x0005f> in :0 at Xwt.Backends.ToolkitEngineBackend.CreateBackend[T] () <0xf46fef80 + 0x00023> in :0 at Xwt.Toolkit.Initialize (Boolean isGuest) <0xf46fde10 + 0x000f3> in :0 at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) <0xf46fda30 + 0x00127> in :0 --- End of inner exception stack trace --- at Xwt.Toolkit.LoadBackend (System.String type, Boolean isGuest, Boolean throwIfFails) <0xf46fda30 + 0x001a3> in :0 at Xwt.Toolkit.Load (System.String fullTypeName, Boolean isGuest) <0xf46fd620 + 0x00077> in :0 at Xwt.Application.Initialize (System.String backendType) <0xf46fd548 + 0x00027> in :0 at Xwt.Application.Initialize (ToolkitType type) <0xf46fd080 + 0x0001b> in :0 at Xwt.Application.InitializeAsGuest (ToolkitType type) <0xf46fd038 + 0x00013> in :0 at MonoDevelop.Ide.IdeStartup.Run (MonoDevelop.Ide.MonoDevelopOptions options) <0xf46f3118 + 0x00573> in :0 at MonoDevelop.Ide.IdeStartup.Main (System.String[] args, MonoDevelop.Ide.Extensions.IdeCustomizer customizer) <0xf7490030 + 0x00167> in :0

When	Who	Action	New State
2016-02-02	Tom Hindle	Give more information	Open
2016-02-02	actionparsnip	Answer	Answered
2016-02-02	Tom Hindle	Comment	Answered
2016-02-02	Tom Hindle	Comment	Answered

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