Crash while attempting to trade with Villager

Put the summary of the bug you're having here

What I expected to happen was...:
complete trade with villager (butcher)

What actually happened was...:
Pgm flat out blew up

Steps to Reproduce:
1. Village of about 30ish villagers; 90% with multiple trades (up to 7 per?)
2. Initiate trade with butcher.. do several trades...
3. On one trade later, the error may occur. Sorry, this is intermittent.

I'm on a multiserver platform (ScoutCraft), but this has happened multiple times on my private world, too. Maybe 50 times there... back to version 1.6s or even older.

The deadfile is attached to the game I'm playng now... I'll go look for it...

IMPORTANT: Couldn't you guys automatically grab the thing for us?? Lots faster & more accurate, too, I'd think!

Nope, I cant find it.
Looked through anything on my computer dated today.
Nada.
Bummer. This problem REALLY needs to get solved.