I seem to be getting the same bug as the guy you were responding too, so I'll pick up here I guess. What happened(in my case, at least) is, in order to test if I was gonna be getting the exploding bug that others have had, I slapped a 'Container bay type A/B' on the side of a Mk2 lander can, placed a type A container in the bay, put a Ground pylon inside of it, then I launched the craft. When I attempt to remove the Ground pylon from the container on the launch pad, nothing happens, the part does not appear on my back, it isn't removed from the container, and I get no error messages. I know I'm close enough, because the only way to be any closer would be to be INSIDE the container, so its not distance affecting it. I'm also able to grab the container itself just fine, and carry it around and what not, but I still can't remove anything from inside the container. Another odd behavior I just noticed, is that when I click the 'Release' button on the container bay, the container does NOT come out of the bay, even under extreme maneuvers; Yet, it can still be grabbed just fine by an EVA-ing kerbal. Everything else seems to be working, I'm able to grab and attach all the other parts, the only problem seems to be this container bug...