Consistent crash right after load

[Eiron]

On my main save file, my game will crash after less than five minutes of play time with no up-speed/time compression running (twice, it crashed after less than thirty seconds). I tried turning off full-screen, no luck, and then thought it might be a corrupted save and started a new game, same result.

I have an Intel Core i7-4770, a Radeon HD 6950, 8 gigs of ram, and am running Windows 7 Ultimate 64 bit. Squad size and population sliders were at default, and I'm not running any mods.

Also, much smaller issue, but my fourth character (Romonaro) had 102 skill in field medic after the last save import, which I thought was just an old residual effect, but then it climbed to 103 after an import to the latest experimental version.

[Eiron]

Update: I tried deleting my data folder and then revalidating the cache, same result.