I've been getting back into KSP again running through career mode again. I wanted to try out a few mods, so I installed CKAN, Alarm Clock, Engineer Redux, and MechJeb 2. Alarm Clock and Engineer Redux work great, but I can't seem to get MechJeb to work at all.
I've tried using it in both career and sandbox, but I don't see any MechJeb UI. For career mode my tracking station is fully upgraded and I have the AR202 module installed on my rockets. Any idea why it doesn't appear? I can do most everything fine, I just want to get it working because I'm rendezvous/docking is so tedious.