Mine too. I have 930T, got it last week and I get same message. I called the customer service. They said it is software problem and will be resolved in next update!!!
My RDS-TMS was wrong model, not compatible with device and had to send it back.
I created bitmap image icons but they are not working, if you can help me these!
I also want to put a icon for my home address (not by creating a poi). Is it possible? Where the Home address is stored?