I have a PIC/POSKY setup and when I turn on the auto-pilot with any sort of pitch control there is a violent occilation of the trim causing the aircraft to pitch up and down. When I look at the trim on the throttle I see it going up and down like crazy. Obviously the aircraft is overcorrecting with the trim but I can't figure out why.... I disabled my trim pot and tried a few other things but to no avail. Funny thing is that is worked fine a few months ago when I last played it and the only thing I have changed since then is the FSUIPC version. Any ideas?

There is a very recent release of FSUIPC that has new checkboxes for fixing rudder, aileron, and elevator spikes. Be sure you have this latest release try checking these options (under technical tab)RG