icons don't work for any of the items
From my understanding to have the icons appear you need to edit the item.dbc with the item added to it you need the icon for. Without editing this, all items in WotLK servers that are not normally in the game (AKA custom items) will have red "?" as their icon. Weapons and armor can be equiped by click/draging them but they can't use "Use:" effects properly without being placed on an actionbar. From what I see here, just the display stuff was released on this post specifically, meaning it's up to us to get the rest working.
For OP, this release is great ^^
///Edit///
Actually I see what the person I quoted was talking about. Perhaps the best way to counter this would be to simply add the items we need/want manually to our own DBC file to counter every item having a broken icon.
yeah
i managed to set almost all icons on each item i want to use
a few hours work but it worth every second
here is a preety simple way to do it but is mostly a hackfix.
most items icon have the same name as the model for example inv_axe_2h_artifactmaw_d_02.blp have the model axe_2h_artifactmaw_d_02.md2.
create a database table for itemdisplayinfo.dbc and set the icon with the following query
update itemdisplayinfo set iconname=replace(concat('inv_',modelname),'.md2','');
this are the steps the following query actually do
inv_->inv_axe_2h_artifactmaw_d_02.mdx->inv_axe_2h_artifactmaw_d_02