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Simulator hangs during application installation

This can happen when application names include a '.' (dot) in their name. This is forbidden as the executable ...

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Startup crash when executing inside the iOS simulator

If you get a runtime crash (SIGSEGV) inside the simulator along with a stack trace that looks like this: ...

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Can't create display binding for mime type:...

This error happens if you try to create an iPhone UI from a non-iPhone project. Make sure that you start with ...

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ibtool returns error 133

This means that you have XCode 4 installed. In XCode 4, the tool ibtool was removed, it is no longer possibl...

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Project Always Runs in the iPad Simulator

The iPhone SDK 4.0 installer installs 2 SDKs - the 3.2 SDK, for building iPad-only apps, and the 4.0 SDK, used...

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UIAlertView or UIActionSheet vanish after being created

If you have some code like this: var actionSheet = new UIActionSheet ("My ActionSheet", null, null...

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MainWindow.xib.designer.cs file is not updated

There was a bug in MonoDevelop 2.4 that caused it not to group the MainWindow.xib file with the MainWindow.xib...

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Unhandled Exception: System.Exception: Failed to find selector someSelector:...

This exception is caused by one of three things: You have provided a Selector to the Objective-C runtime...

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Error "A pre-release beta version of the SDK was used to build the app"

(Contributed by Ed Anuff) Follow these steps: Change the SDK version in iPhone Build to 3.2 or iTun...

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Error "The binary you uploaded was invalid. A pre-release beta version of the...

This error is usually caused with a project that was started in iPad development before MonoTouch 2.0.0 was re...

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Error "mtouch failed with no output"

The current release of MonoTouch and MonoDevelop fail when the project name or the directory where the solutio...

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Error "AFCFileRefWrite returned: 1" during upload

While uploading an app to your device you may receive an Error "AFCFileRefWrite returned: 1". This can happen ...

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Error 134: mtouch failed with the following message:

This error could be raised if you are trying to build with -nolink on the MonoTouch 1.4 style of releases. Yo...

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Debugger is unable to connect with the device

When you start debugging a device configuration, you will see the debugger show a dialog indicating that it is...

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Ran out of trampolines of type 2

If you make heavy use interfaces, you may get this message on device. You can create more type 2 trampolines ...

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Ran out of trampolines of type 1

If you make heavy use of recursive generics, you may get this message on device. You can create more type 1 t...

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Ran out of trampolines of type 0

If you get this message while running device, You can create more type 0 trampolines (type SPECIFIC) by modif...

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Installation Hangs

Both Mono and MonoTouch installers hang if you have the iPhone Simulator running. This problem is not limite...

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Compiled application is very large

In order to support debugging, debug builds contain additional code. Projects built in release mode are a frac...

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System.ExecutionEngineException: Attempting to JIT compile method (wrapper...

The [] suffix indicates that you or the class library are calling a method on an array through a generic colle...

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Assertion at ../../../../mono/metadata/generic-sharing.c:704, condition `oti'...

If you are receiving the following stack trace: * Assertion at ../../../../mono/metadata/generic-sharin...

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MonoDevelop crashes when you copy text

The popular Mac utilities QuickSilver, Google Toolbar and LaunchBar have clipboard features that corrupt MonoD...

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Code Completion is not working in MonoDevelop

1) Ensure that you are using the latest version of MonoDevelop from http://monodevelop.com/Download 2) For Mo...

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Deploy to device fails with System.Exception: AMDeviceInstallApplication...

This error means that the code-signing configuration for your certificate/bundle id does not match the provisi...

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mtouch failed with the following message: Cannot open assembly...

If you see this error message, generally the problem is the absolute path to your project contains a space. T...

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Warning for actions: The private method 'Foo' is never used. (CS0169)

Actions for interface builder files are connected to the widgets by reflection at runtime, so this warning is ...

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Type {Foo} does not contain a definition for `GetNativeField' and no...

If you get this error in the designer generated files (*.xib.designer.cs), it means one of two things: 1)...

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System.MissingMethodException: No constructor found for...

This error is produced at runtime when the code tries to instantiate an instance of the classes that you refer...

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Unknown class XXXX in Interface Builder file

This error is generated if you define a class in your interface builder files but you do not provide the actua...

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NSUnknownKeyException - This class is not key value coding-compliant for the...

This error occurs when you have initialized a ViewController in code but also have the ViewController initiali...

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You are getting a ModelNotImplementedException

If you are getting this exception this means that you are calling base.Method () on a class that overrides a M...

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System.MissingMethodException (anything else)

The member was likely removed by the linker, and thus doesn't exist in the assembly at runtime. There are sev...

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System.Text.Encoding.GetEncoding throws NotSupportedException

You're maybe using an encoding that is not added by default. Check the Internationalization page to learn how ...

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How do I create outlets or actions with Interface Builder?

You can find out how to create outlets and/or actions with Interface Builder from our iOS Getting Started guid...

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Invalid Code Signing Entitlements

If you're getting the following message: "Invalid Code Signing Entitlements - The signature for your app bund...

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