I can get everything set up just fine, from cold and dark to engines on, etc. When I take off, everything is fine until I click on the autopilot button. The plane will pitch up suddenly and then dive.

I have the RJ100 and F28 and the autopilot works just fine.

I have reviewed all of my joystick assignments, and I don't see any conflicts at all. I've switched all those I'm not using to "none" in terms of assignments.

Has anyone else experienced this behaviour?

Thanks,

Joel