Reliable client crash with autoinventory

First, setup a hotkey that does /autoinv

Go to the casino in Shadowhaven to make this next part easier. Purchase 80 King's Court Tokens (4 full stacks) (example merchant who sells them: Keiya Oakwood). Now stand in front of Therin Asakith (or any other casino dealer).

Turn in all 80 tokens in one trade to Therin to get a lot of stuff on your cursor / in your hands. This will also open your inventory window if it isn't already open.

Here's the important step. Move your mouse cursor over the middle section of your inventory window (where clicking is equivalent to /autoinv). When you are ready, simultaneously quickly mash your left mouse click and autoinventory hotkey. After a few seconds, your client will hard crash to desktop. I suspect there is a timing issue where one of the autoinventory methods expects an item to be there that has just been removed from the cursor.