"Interface Builder was unable to determine the type of "MainStoryboard_iPhone.storyboard"" error in MonoDevelop

In MonoDevelop I'm creating a 'MonoTouch Single View Application - Universal (Storyboard)', when I compile the solution I get the following error:

Compiling interface definitions /Developer/usr/bin/ibtool --errors --warnings --notices --output-format human-readable-text "/Users/dev/Projects/JScanner/JScanner/MainStoryboard_iPhone.storyboard" --compile "/Users/dev/Projects/JScanner/JScanner/bin/iPhoneSimulator/Debug/JScanner.app/MainStoryboard_iPhone.storyboardc" --sdk "/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPh开发者_运维问答oneSimulator4.3.sdk" /* com.apple.ibtool.errors */ /Users/dev/Projects/JScanner/JScanner/MainStoryboard_iPhone.storyboard: error: Interface Builder was unable to determine the type of "MainStoryboard_iPhone.storyboard". ibtool exited with code 1 Build complete -- 1 error, 0 warnings

This is just the basic solution, so I haven't added any new source files or views into it yet.

This error will be fixed in the next version of MonoDevelop. For now, I would suggest you use xib-based projects.