Greetings! I'm not completely sure this is an issue with Mechjeb but I figured I'd start here and move forward. I recently deployed a space station into Kerbin orbit at around 200km. It was only a core with docking ports for other modules. Next, I docked a second part of the intended space station with the core (this part had solar panels, batteries, and fuel generators). My intention is to use this station as a refueling port. Finally, I attempted to launch a module with a probe sized docking port so probes can dock to take on fuel as well. This is where my problem started. Whenever the ship got to within about 200 meters of the space station, all of the battery components of the space station exploded off of it and the station itself went flying off into space at high velocity. There are no engines or any other components I can think of on the station that would cause this. The reason I'm starting here is because Mechjeb autopilot was active at the time for an approach to the station. I have used Mechjeb before (for the other parts of the station) with no problem, but, again I figured I'd start here to see if anyone has seen this before. Thanks!