I downloaded the latest stable version, have the MechJeb2 folder in the gamedata folder and have the MechJeb module available to put onto my craft. Unfortunately it doesn't seem to be drawing power even though it says it's available. It also is not giving me any MechJeb windows. Also, if I abort flight and go back to hangar, then try to relaunch it says I have an unsupported part. This is in career mode.