This is probably a Xamarin bug by the looks. Does anyone have a work around? The bigger picture is I'm trying to replace a call to UITextView.ContentSize which no longer works in iOS7.
2013-09-25 12:55:05.609 TouchContainer[2634:a0b] [MobileBullet] Exception: Touch.Container.QuestionView: : Failed to initialise view QuestionView
MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown. Name: NSInvalidArgumentException Reason: -[__NSCFString pointSize]: unrecognized selector sent to instance 0x197672c0
at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging:SizeF_objc_msgSend_IntPtr (intptr,intptr,intptr)
at MonoTouch.UIKit.NSStringDrawing.WeakGetSizeUsingAttributes (MonoTouch.Foundation.NSString This, MonoTouch.Foundation.NSDictionary attributes) [0x00042] in /Developer/MonoTouch/Source/monotouch/src/UIKit/NSStringDrawing.g.cs:55
at MonoTouch.UIKit.NSStringDrawing.GetSizeUsingAttributes (MonoTouch.Foundation.NSString This, MonoTouch.UIKit.UIStringAttributes attributes) [0x00000] in /Developer/MonoTouch/Source/monotouch/src/UIKit/NSStringDrawing.g.cs:64
at Touch.Container.BottomBarSubView.MeasureTextViewHeight (MonoTouch.UIKit.UITextView textView) [0x0008c] in /Users/felix/MagicBullet/src/MagicBullet/MobileBullet/Touch.Container/Views/BottomBarSubView.cs:448