ap panel

Hi I have just installed an AP Panel and Knob panel. The AP panel was added fine, status ready, the knob panel reports the above error the main SW version is 15.3.5.499 but the AP panel which is new reports 16.4.6.10205 any ideas please thanks

I have an RV-12 with Rotax 912 ULS, Skyview Classic signed screen, 2 axis AP, and just installed the AP panel and Knob panel. I got the new AP 37 pin connected and plugged in to my master control module. When I finished, everything worked great! Knobs function properly, AP works and flies with...