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Editorial Team
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Asked: 2026-05-27T12:25:30+00:00

I have created a masterdetail storyboard application within monotouch. When I try double clicking

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I have created a masterdetail storyboard application within monotouch. When I try double clicking on the storyboard to open it up in xcode I get an error

Error updating Xcode project`. Could not generate outlet ‘DetailItem’ in class ‘LCMasterDetail.DetailViewController’ as its type ‘System.String’ could not be resolved to Obj-C.

MonoDevelop.MacDev.ObjCIntegration.ObjectiveCGenerationException: Could not generate     outlet' DetailItem' in class 'LCMasterDetail.DetailViewController' as its type 'System.String' could not be resolved to Obj-C
at MonoDevelop.MacDev.ObjCIntegration.NSObjectTypeInfo.GenerateObjcType (System.String   directory, System.String[] frameworks) [0x001e8] in  /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/ObjCIntegration/NSObjectTypeInfo.cs:159 
at MonoDevelop.MacDev.XcodeSyncing.XcodeSyncedType.SyncOut (MonoDevelop.MacDev.XcodeSyncing.XcodeSyncContext context) [0x00000] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeSyncedType.cs:64 
at MonoDevelop.MacDev.XcodeSyncing.XcodeMonitor.UpdateProject (IProgressMonitor monitor, System.Collections.Generic.List`1 allItems, MonoDevelop.MacDev.XcodeIntegration.XcodeProject emptyProject) [0x00324] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeMonitor.cs:137 
at MonoDevelop.MacDev.XcodeSyncing.XcodeProjectTracker.UpdateXcodeProject (IProgressMonitor monitor) [0x00000] in /private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeProjectTracker.cs:315

Been a newbie noob to monotouch I have no clue whats wrong.

Anyone else had this problem?

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1 Answer

  1. Editorial Team

    What version of MonoDevelop are you using? This works just fine with MonoDevelop 2.8.5, the latest stable release. If you’re using the 2.9.x beta series, would be able able to try with 2.8.5? Also, what version of Mono do you have installed?

    The above information can be found by clicking on ‘MonoDevelop -> About -> Version Information’.

    EDIT: This is a regression in the 2.9.x beta series, so if you just switch to the stable version everything will work as expected.

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