Posted this to Gabrium as well, but have you tried removing your settings files from your PC? I was plagued by this issue about this time last year, and this served to be the ultimate solution for me.

Be sure to back the files up so that you can restore them one by one at a later date.

Settings files are located at:
...\Documents\My Games\Final Fantasy XIV - A Realm Reborn\FFXIV_CHRXXXXXXXXXXXX

You end up losing macros and other files, but can slowly restore them one by one to see where the problem may have been.