I've got the RCBCO20 add-on installed properly and until a short time ago it worked. It still works at 50% efficiency in that the arrestor zones for the carriers display and I can make a trap OK. What's missing is the catapult end of things. All zones are installed properly in "Gauges," I can taxi to the cat, set the parking brake, set 3/4-full flaps, go to max throttle and get green lights in the box, can even set the catapult end speed - only problem is I don't get the "ready" tone (little stacatto beeps), and the cat itself doesn't function, so I just dribble off the bow. Installed "SweetFX" a short time ago and wondering if that has something to do with it.