What does the “Unexpected protocol version sent by the runtime system” message mean ?
The protocol used by the Runtime System and the GDC to communicate may change, depending on new features that are added to Genero. This message is displayed when the Runtime System and the Front End use protocols too different to work perfectly. You can press “Continue”, but this is likely to cause problems that may lead to a GDC crash. We recommend that you always use GDC with a Runtime System version designed to work with it..