Here is a new release of Monobjc Bridge. Issues resolved in 2.0.272.0: ============================= - 0000098: [API] WebView's MainFrameURL property is miscategorized as Mac OS X 10.5 only. - 0000099: [API] Consistent SEGV crash when calling NSPropertyListSerialization method PropertyListFromDataMutabilityOptionFormatErrorDescription - 0000100: [API] When using message with 'out' parameter, the bridge crash when the return value is null. - 0000101: [API] By reference parameters are not correctly mashalled and unmarshalled - 0000102: [API] NSObject does not expose the NSKeyValueBindingCreation protocol - 0000103: [API] More complete support for CoreGraphics and Quartz 2D API - 0000097: [API] Quartz 2D CGColor functions are missing - 0000104: [API] Refactor ApplicationServicesFramework class to avoid a huge collection of methods related to Quartz 2D - 0000096: [API] NSBoxType.NSBoxCustom enumeration value is missing - 0000095: [API] NSArrayController has a mistyped property arrangedObjects - 0000094: [API] ISynchronizeInvoke interface should be available for Mac OS X 10.4 - 0000085: [Build System] Extend task to embeded arbitrary assemblies or native library - 0000086: [Build System] task could cache binary slice of runtime assemblies - 0000087: [API] To help cross-thread calls on NSResponder, define a MethodInvoker delegate. - 0000089: [Build System] task does not embed the machine.config (needed for remoting) - 0000090: [API] Method that uses 'out' keyword or the [Out] attribute cannot be called from Objective-C - 0000091: [Others] Profiling shows a lot of lookup for native libraries - 0000092: [API] Static methods exposed to Objective-C crash when returning null - 0000093: [API] Several class in CoreAnimation return Id instead of the proper type - 0000105: [API] Missing return attribute on various FoundationFramework method.