This is in Windows 7 64bit on Steam, v0.90.0705 Beta. I loaded up KSP after about 3 weeks, not sure if anything changed in the meantime, but when I try to go my Minmus base, the game lags horribly until crashing a minute or so later. It runs perfectly fine otherwise, unless you bring another ship too close to the site of the base on Minmus, where it starts to lag and then crash. Also of note is that in the roster are duplicates of some of the Kerbals on Minmus. That is to say that Jeb, for instance, occurs twice in the list, both times stating he is on Minmus. Screenshot of Minmus base http://i.imgur.com/BJlNdwD.jpg. There are numerous parts missing from the base, as well as the Kerbals. And Minmus. DxDiag https://www.dropbox.com/s/tzb3s7824z2bx89/DxDiag.txt?dl=0 Output log https://www.dropbox.com/s/h9wyncnjt7un2uq/output_log.txt?dl=0 Save https://www.dropbox.com/s/018fxfwbr26avxi/borked.sfs?dl=0 Of note in the save is that a lander (named 'recovery vehicle') is en route to the base. Once it closes the distance, the lag begins, followed by the program crashing. Any help is appreciated.