GravityBox says something about not responding after it tries to contact the server. Wasn't really paying much attention to the exact words of the error, but it won't load. Went ahead and installed xposed. I have very little experience with it so I'll use this as an opportunity to see what it can do.
ETA: Looks like GravityBox framework needs to be installed within xposed. Installed, rebooted, and set up all the tweaks in it. Works great, thanks guys!
ATT Captivate - Retired/Selling
US Cellular Hero S - Retired/Selling
TMobile Vibrant - Retired/Selling
Sero 7 Pro - Current
AT&T S3 - Current