ReferenceError: Error #1056: Cannot create property code on mx.messaging.messages.ErrorMessage.

Hi all

Can anyone tell me why I'm getting this error message around 50% of the time when connecting to a C# class exposed through WebOrb? It appears to be completely random. Sometimes it'll connect, sometimes not.

ReferenceError: Error #1056: Cannot create property code on mx.messaging.messages.ErrorMessage.

Any help on this would be greatly appreciated. It's driving me nuts! If you need any more info in particular let me know and I'll post it.

Thanks

Dustin