Same here, too. Mechjeb also doesnt work :/ I've tried to compare the FTmN engine's .cfg file with a regular stock engine, but nothing seems to be missing.. did you have any success in figureing out what the problem could be??
I've had the same problem.. but I've never installed RT0.5.1 before.. Even after a completele untouched vanilla and the only mod being RT2 it had the same issue: satellite dishes & Antennas deploy automatically and I can't interact. Is this a bug I'll have to live with or does it work for you guys? edit: btw I'm using 0.21.1