We've figured out the issue that was causing kernel panics when saving files for some users. Turns out, it had to do with the file icon getting written out. Kevin spied a line of code that was at fault, and was thinking of commenting it out, and then Ken was all, “Fly, you fools!!” and he jumped right up on the build machine and started bellowing “YOU SHALL NOT PASS!!!” at the kernel panic, and just like that it was gone.
Or, something to that effect.
Anyways, you can find the kindly release at the beta page, enjoy!