Fix for GLADIUS not working 3.3.5
1) get gladius from here: http://www.mediafire.com/file/h3pxea...sa/Gladius.zip
2) extract and put the "Gladius" folder inside WTF/Addons folder.
3) go to WTF/Account/<yourAccountFolder>/SavedVariables , find and delete "Gladius.lua" and "Gladius.lua.bak"(This last one might not be there).
- start the game
NOTE: I have not tested it myself, but removing "Addon".lua at step 3 might fix your not working "Addon", in case you know for sure the addon file is correct, and you checked "load out of date addons".