I was going through the ground sequence and was in the process of catering. During that process, I requested boarding. It said that it would begin once the previous service was completed. Shortly after, the baggage loading belts backed away from the aircraft. The baggage carts then pulled into their load/unload positions, but with no loaders, they just sat there and nothing else would proceed. I then did a reset position, but that dumped GSX and then I could not get a menu with Ctrl F12. I had to restart FSX/SE. Is this a known issue, or do I need to wait until one process is completed before requesting the next one? Thanks for any help you can provide.