In one of my abstract base view models I have a property of type GameField that is also called GameField. During prototyping the setter was public which I now changed (even if I'm still prototyping) to private while also adding a public method that assigned the property instead and also executes some other code.

After this change I always got the exception mentioned under 'Additional Information'. Since it was complaining about the PropertyAccessor.Set (that's apparently missing) I thought it might have something to do with the serialization process. After some debugging I also found that NoesisGUI still thinks that the property is 'writable' and so tries to assign a null value. Then it fails as the property has no setter.

After manually invoking NoesisGUI to rebuild it worked without trouble. So my question is why it doesn't detect this change? I tried switching it a few times and always end up with the same result.