The UI in Warhammer Online was made to be open to modification, and many player-made mods are available for download on various sites. Mythic Entertainment's recent Game Update, however, may have caused several of these mods to stop functioning properly, causing errors or even keeping the game from launching at all.
As always we want the WAR experience to be as enjoyable as possible. We have identified that some UI Mods may be causing issues with the 1.0.2 update. If you are experiencing crash to desktop (CTD) issues when trying to launch the game, we suggest you disable or remove all of your UI Mods. If this resolves the issue for you, then you should update or remove any mods that are not 1.0.2 compliant.