I figured this was as good a place as any to post this. The current .86 build of E:FE seems to hold together fairly well, but after many many turns I do occasionally see crash to desktops.
There isn't a consistent pattern to this, and I have an older machine (Turion X2 64, 32 Bit Vista, 2 GB Ram, ATI Mobility Radeon HD2600), and it isn't happening often enough for me to find annoying (autosave reloads just fine, and I can continue on without issue). If it happens again, I'll make an effort to post the dump file.