I have built several ships, assembled in orbit, using three Rockomax Jumbo64 tanks joined by Clamp-o-tron docking ports and powered with LV-N Atomic Motors. I use these ships for manned travel to other planets. At least I want to. Although they seem to work ok for a while, at some point I switch to them and the game will seem to load slowly. The interface will display, but the ship graphic will never load with the screen staying black. I switch to the map view and the screen remains black. Occasionally, the ship (I believe it is one or more Rockomax tanks) will spontaneously explode instead. If I head back to the main KSP screen, the space center will not load but the screen will remain black. At this point I need to exit the game for it to load properly. Even if I reload the game, and reload a previous quicksave, the ship will not load and the save game seems to be corrupted. The previously selected ship could vanish from the roster and the crew listed as missing. Once all ships which were equipped with the Rockomax Jumbo64 tank vanished. Sometimes this happens as soon as I leave Kerbin orbit, other times it will last as long as to reach Jool. Usually, when the screen remains black, the altimeter remains blank, the delta-V indicator and node times read NA, as do other MechJeb windows. Once MechJeb indicated my altitude was about 5 Gigameters with an orbital period of over 5 years which seems to indicate it was teleported from Jool orbit to interstellar space. Please help me figure out how to resolve this since it prevents me from going further than Minmus. I am running the following Mods: Chatterer v0.5.9.4x86 Environmental Visual Enhancements with BoulderCo Citylights and Clouds v7.3 Kerbal Alarm Clock v2.7.7.0 MechJeb2 v2.3.1.0 (just upgraded from v2.2.1.0)