Note that the dep files have been updated for Xorg-7.7 and deps to be recursive.
This is a big change and perhaps the best way to handle it would be to use the app browser to mark Xorg-7.7 for deletion, reboot and use "tce-load -w Xorg-7.7" to download everything again.
After the change, Xorg-7.7 loads noticeably faster.