Wowwiki merged with wikia as it's primary wiki backend / host
the new URL is
http://images.wikia.com/wowwiki/imag...head-22x22.png
Plugins & Products ->
Plugin Manager
Search for "
WoWhead - Adds Icon to toolbar" and edit
the 3rd line in the plugin, change to
Code:
$wowhead_itemcode[buttonimage] = "http://images.wikia.com/wowwiki/images/6/6e/Icon-wowhead-22x22.png";