CH dumping

For the last week or so, I have experienced a problem that I have never had with any version of FS. Each time I start up FS9, my CH Virtual Flight Yoke (The old cream coloured box!) is dumped out by Windows/FS9. I have to reselect the my CH and then calibrate and then go back into FS.
I am running CH yoke, peddles, CH Throttle Quadrant and Aerosoft avionics/gear/flaps control box. All has been in harmoney for the last year. Anyone got any ideas.
Thanks
Matt
I am running CH yoke, peddles, CH Throttle Quadrant and Aerosoft avionics/gear/flaps control box. All has been in harmoney for the last year. Anyone got any ideas.
Thanks
Matt