Xamarin Studio Addin partly broken

[lemonmojo]

The current (V5.0.2568.19) Xamarin Studio Addin seems to be partly broken.

When opening a project's properties and selecting the Monobjc node I get two error messages and the content of the page is empty.

First message:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
  at System.Collections.Generic.Dictionary`2[System.Version,Monobjc.Tools.Utilities.MacOSVersion].get_Item (System.Version key) [0x000a2] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Collections.Generic/Dictionary.cs:148 
  at MonoDevelop.Monobjc.MonobjcProject.GetMonobjcAssemblies (MacOSVersion version) [0x00000] in <filename unknown>:0 
  at MonoDevelop.Monobjc.Gui.ProjectOptionsWidget.FillFrameworks (Gtk.TreeView treeView, MonoDevelop.Monobjc.MonobjcProject project, MacOSVersion version) [0x00000] in <filename unknown>:0 
  at MonoDevelop.Monobjc.Gui.ProjectOptionsWidget.HandleComboboxOSVersionChanged (System.Object sender, System.EventArgs e) [0x00000] in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00054] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MonoMethod.cs:230 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00069] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MonoMethod.cs:238 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MethodBase.cs:114 
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00107] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/Delegate.cs:462 
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00018] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/MulticastDelegate.cs:70 
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/Delegate.cs:407 
  at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00050] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/Signal.cs:195 
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00019] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/SignalClosure.cs:118 
  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00084] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/SignalClosure.cs:146 

Second message:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
  at System.Collections.Generic.Dictionary`2[System.Version,Monobjc.Tools.Utilities.MacOSVersion].get_Item (System.Version key) [0x000a2] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Collections.Generic/Dictionary.cs:148 
  at MonoDevelop.Monobjc.MonobjcProject.GetMonobjcAssemblies (MacOSVersion version) [0x00000] in <filename unknown>:0 
  at MonoDevelop.Monobjc.Gui.ProjectOptionsWidget.FillFrameworks (Gtk.TreeView treeView, MonoDevelop.Monobjc.MonobjcProject project, MacOSVersion version) [0x00000] in <filename unknown>:0 
  at MonoDevelop.Monobjc.Gui.ProjectOptionsWidget.Load (MonoDevelop.Monobjc.MonobjcProject project) [0x00000] in <filename unknown>:0 
  at MonoDevelop.Monobjc.Gui.ProjectOptionsPanel.CreatePanelWidget () [0x00000] in <filename unknown>:0 
  at MonoDevelop.Ide.Gui.Dialogs.OptionsDialog.CreatePageWidget (MonoDevelop.Ide.Gui.Dialogs.SectionPage page) [0x0003b] in /Users/builder/data/lanes/monodevelop-lion-monodevelop-5.5-branch/6d4c806e/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui.Dialogs/OptionsDialog.cs:634 
  at MonoDevelop.Ide.Gui.Dialogs.OptionsDialog.ShowPage (MonoDevelop.Ide.Extensions.OptionsDialogSection section) [0x001ae] in /Users/builder/data/lanes/monodevelop-lion-monodevelop-5.5-branch/6d4c806e/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui.Dialogs/OptionsDialog.cs:518 
  at MonoDevelop.Ide.Gui.Dialogs.OptionsDialog.OnSelectionChanged (System.Object s, System.EventArgs a) [0x0002e] in /Users/builder/data/lanes/monodevelop-lion-monodevelop-5.5-branch/6d4c806e/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui.Dialogs/OptionsDialog.cs:461 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00054] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MonoMethod.cs:230 
  --- End of inner exception stack trace ---
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00069] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MonoMethod.cs:238 
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MethodBase.cs:114 
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00107] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/Delegate.cs:462 
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00018] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/MulticastDelegate.cs:70 
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System/Delegate.cs:407 
  at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00050] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/Signal.cs:195 
  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00019] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/SignalClosure.cs:118 
  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00084] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/gtk-sharp-2.12.21/glib/SignalClosure.cs:146 

Also, the "New File" templates are completely missing.

[sushihangover]

XS/MD 5.9.x on OS-X 10.10.4 still has this issue when installing via the binary pkg installer and MD plugin.