我创建了一个新的MonoMac项目并使用Interface Builder（Xcode）打开了MainWindow.xib。在做一个简单的改变（重命名为Window标题）后，该项目不能再构建。 有谁知道如何解决这个问题？MonoMac：和Xcode 4.0错误：“Interface Builder文件中的未知窗口类MainWindow”
我在OS X 10.6.7上使用MonoDevelop 2.6，MonoFramework-2.10.1和Xcode 4.0。
这是错误消息：
2011-03-28 18:45:39.986 HelloWorld[30332:613] Unknown Window class MainWindow in Interface Builder file, creating generic Window instead
Unhandled Exception: System.InvalidCastException: Cannot cast from source type to destination type. at HelloWorld.MainWindowController.get_Window() <0x0002e> at HelloWorld.AppDelegate.FinishedLaunching (MonoMac.Foundation.NSObject) <0x0003d> at (wrapper dynamic-method) object.[HelloWorld.AppDelegate.Void FinishedLaunching(MonoMac.Foundation.NSObject)] (MonoMac.Foundation.NSObject,MonoMac.ObjCRuntime.Selector,MonoMac.Foundation.NSObject) <0x00033> at (wrapper native-to-managed) object.[HelloWorld.AppDelegate.Void FinishedLaunching(MonoMac.Foundation.NSObject)] (MonoMac.Foundation.NSObject,MonoMac.ObjCRuntime.Selector,MonoMac.Foundation.NSObject) <0x000eb> at (wrapper managed-to-native) MonoMac.AppKit.NSApplication.NSApplicationMain (int,string[]) <0x00003> at MonoMac.AppKit.NSApplication.Main (string[]) <0x00017> at HelloWorld.MainClass.Main (string[]) <0x00019>
感谢您的帮助。
干杯
PS：我发现了一个http://monotouch.net/Documentation/Troubleshoot#Unknown_class_XXXX_in_Interface_Builder_filebut疑难解答帮助我猜它不能在这种情况下算，因为类主窗口已经默认存在..