Autopilot will not engage B747?

I found the problem. I had a couple of boxes check in FSUIPC that were causing the problem. Once I removed the check marks the problem was gone.Fantastic!EdI can't get the autopilot to engage?The auto throttles work fine and the airplane is in trim.When I press the CMD button it immediately disconnects?The FMS is programmed correctly and even with just heading and altitude hold selected it still will not engage?Don't ask me what the problem is? Never seemed to have this problem before?I just updated to version 1.1Any comments are very welcomed.Thanks Ed