Bond4141

I'm having a weird issue when I go to launch a rocket from a pad. For almost every rocket I make, when it finishes the build it will go right to the pad and not allow me to swap ships (with [ and ]), or control anything on the ship. However if I go to the space center, and come back the new ship is till there, but it crashes into the launchpad. However, if I make a little dinky ship with only a few parts, I get the "give resources" screen and can actually fly off. Anyone have any ideas?