I occasionally get this when I switch between cd's, or load/unload cd's. It is usually cleared by switching off the engine, but this is a bit inconvenient when you are on the motorway! From my research this is not an uncommon problem.
I am thinking about fitting a switch near the radio, so that I can cut the live feed to the radio, whilst I am driving, thus effectively re-setting the system.
Any thoughts on whether this is possible or not?