[b37] Cursed Sentry doesn't work, at least for non-cursed

[grmblfzzz]

Havn't played a cursed yet, but getting the tree via the graveyard on other characters, the cursed sentry ability doesn't work. It always says "You cannot use Cursed Sentry without a cursed weapon in your inventory!". I've tried it with every weapon type in my inventory, I have five points in Defiling Touch/Dark gifts, and all of the weapons clearly have a curse on them.