Client Crash - adding to stacks in inventory

[AdrianD]

The client crashes and eventuallly boots to character selection after, what seems to be, a loss of communication when purchasing items which add to an existing stack in inventory. This does not kick other clients from what I can tell as I had two separate accounts logged on separate machines.

When entering the game after this occurs, the items are a part of the stack and no cash was subtracted from the character's holdings.

Another stack-transfer related quirk occurs when one character trades with another with the recipient having a partial stack of what is being traded, for example, food. The item does not add to the existing stack. It simply becomes a part of the character's inventory in it's own private slot.

While the latter issue isn't a big deal, I believe the two are related.

* I changed the database value of many of the stack sizes in `items.stacksize`.

Any ideas?