Iron Belt Buckle gives a stack overflow error

[Aubreykun]

Mousing over the original Iron Belt Buckle, or the new Iron, Thorium, or Mithril belt buckles causes the following error to appear:

atsw.lua:2536: stack overflow

It also would not let me craft those items in 0.5.6. I have just updated to 0.5.7 but don't have the mats to test if it still doesn't work right now.