Can't sell stacks of items

[techiem2]

For the past ? betas, my compiles have been unable to sell stacks of items.
As soon as I hit enter on a stack of items in my inventory when I'm in a shop it segfaults.
The backtrace is at: http://pastebin.com/7eL2gU7L

I'm on Funtoo 64 bit (currently 2.6.38-gentoo-r3).

I tried running the 32-bit precompiled version and all sorts of weird things happened (like he saw shop doors as traps and disarmed them.....and got lua errors on leaving town...etc.)