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POXamarin studio fails to open F# files
 

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    <p>I've just installed Xamarin studio to try out the F# experience on OSX. The install works fine and I'm able to create the F# tutorial project, but when it tries to open the Tutorial.fs file I get the following message:</p> <pre><code>System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---&gt; System.MissingMethodException: Method not found: 'Mono.TextEditor.Highlighting.ResourceXmlProvider.Open'. at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&amp;) at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00000] in &lt;filename unknown&gt;:0 --- End of inner exception stack trace --- at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00000] in &lt;filename unknown&gt;:0 at System.Activator.CreateInstance (System.Type type, Boolean nonPublic) [0x00000] in &lt;filename unknown&gt;:0 at System.Activator.CreateInstance (System.Type type) [0x00000] in &lt;filename unknown&gt;:0 at Mono.Addins.TypeExtensionNode.CreateInstance () [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/TypeExtensionNode.cs:93 at MonoDevelop.SourceEditor.SyntaxModeCodon.get_SyntaxMode () [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SyntaxModeCodon.cs:42 at MonoDevelop.SourceEditor.SyntaxModeService+&lt;SyntaxModeService&gt;c__AnonStorey17.&lt;&gt;m__61 (Mono.TextEditor.TextDocument d) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SyntaxModeService.cs:45 at Mono.TextEditor.Highlighting.SyntaxModeProvider.Create (Mono.TextEditor.TextDocument doc) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxMode.cs:839 at Mono.TextEditor.Highlighting.SyntaxModeService.GetSyntaxMode (Mono.TextEditor.TextDocument doc, System.String mimeType) [0x00036] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxModeService.cs:157 at MonoDevelop.SourceEditor.SourceEditorView.UpdateMimeType (System.String fileName) [0x00042] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:926 at MonoDevelop.SourceEditor.SourceEditorView.Load (System.String fileName, System.Text.Encoding loadEncoding) [0x00040] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:792 at MonoDevelop.SourceEditor.SourceEditorView.Load (System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:729 at MonoDevelop.Ide.Gui.LoadFileWrapper.Invoke (System.String fileName) [0x00107] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:1181 </code></pre> <p>Double clicking on the file also results in the above message. The file is visible in Xamarin studio. I can run the tutorial project and it opens up a terminal and executes the file, if I'm using mono 3.0.10. I'm using the xamarin studio version 4.0.4 and have both mono 3.0.10 and 2.10.12 installed.</p> <p>There is one more thing that I don't understand that might be related and that is under references I have a warning that FSharp.Core is not available for Mono / .NET 4.0 (in mono 3.0.10). I thought that would stop me from running the file but it wasn't that's why I'm not sure if it is related or not. </p>
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    1. USTomas Jansson
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    1. COYou'll find up-to-date F# + Xamarin Studio installation instructions at http://fsharp.org/use/ios/. (The instructions apply for Android as well)
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      1. USJames Moore
 

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