I am not sure what the issue is. I am going to take it back to BMW but it seems like an intermittent fault. I have a 32gb stick... sometimes it works, others it doesn't. I have tried a smaller capacity stick with the same results. Its as if it doesn't power the USB stick up properly.
Not sure what the dealers are going to do but replace the usb port..... annoying to say the least. Any ideas on if its a capacity issue?
Thanks again guys.