KSP Access Violation Crashes and Indefinite Hangs

[vrothenberg]

I've been having a number of different crashes recently.  The most common would be switching between vessels, stations and the KSC.  After playing for about an hour or after switching between several vessels Windows throws the generic KSP.exe has stopped working error, and I restart the game.  KSP doesn't seem to log this.   

More recently I've been getting indefinite hangs as well as explicit crashes with the error code:

"KSP_x64.exe caused an Access Violation (0xc0000005)
  in module KSP_x64.exe at 0033:3f3b3211."

The full log output and list of mods is in this Dropbox folder:

https://www.dropbox.com/sh/lhaup8vi2mg88wm/AADBeulJMvVpzImOOowVx5Y_a?dl=0

I have a pretty good Windows 7 machine with 16GB of RAM.  For context, I've been building a lot of SpaceX style SSTO rockets with the Interstellar Computer Core, MechJeb orbit+rendezvous autopilot to an MKS space station in orbit of Kerbin, and I then aerobrake back to the KSC using the Trajectories mod.  The station is about 200 parts and the rockets about 30.  The most recent crash occurred when entering physics range of the station, at about 2300m.

If anyone has any ideas on what's causing these errors I'd greatly appreciate it!

[vrothenberg]

Bumping for visibility.