My first post, and only so a mod can see it and put it to good use.
Mod Pack: Direwolf20 1.0.16 & 1.0.18
Mod & Version: Unknown
Pastbin link to crash log: N/A
Whats the bug? Minecraft crashes and world is lost(level.dat and level.dat_old gone too)
Can it be repeated? Unknown
What exactly caused...