I had trouble finding a fix that would fix the wilco citation x switches. Everything was working as far as the aircraft goes , but no switches or gauges worked in the cockpit. I could not find any answer on the wilco site or feel/there forum, I even email them and they never answered, I chased this for a bit and was emailed with a fix.I had copilot /fsinn in my dll.xml file. The problem was that copilot was above the wilco instruction in the dll.xml file.I only had to move the fscopilot entry in the file to the bottom of the file and then everything worked.Thank you all for the information that led to this solutionEmail me if anyone else had this experienceThanks and i hope it helps others.Pete

thnx Pete, now i'm able to use this plane

DLL.XML can be find in USERS/Appdata/roaming/micosoft/fsx.

I'm happy

Hans