CVar checkAddonVersion

Controls whether out-of-date addons (those with non-current Interface: .toc tag) are loaded.

Default Setting

 * 1

Possible Settings

 * 0 :Out of date addons are loaded
 * 1 :Out of date addons are not loaded

Changing this setting
In-game, type the following /console checkAddonVersion setting

Alternatively, you can exit wow, open the Config-cache.wtf file, and add the following line: SET checkAddonVersion setting