So i think I broke my N7. I had already rooted and it was working fine. I was playing around in there, using ROM toolbox. I saw that I could change the font, so I did. It said it needed to reboot, so I rebooted. Now its stuck on the glowing X.
Thank you so much! All up and running now, and re-rooted. Apparently the ROM toolbox does not make a backup when it says it does. Oh well, live and learn. Thanks again!
You really should be backing up using your recovery. That will be the BEST way to backup and your system and will be your best fail safe in case something like this happens again. Backing up in the recovery is very very easy and probably the best way to make a backup.
Also, always remember, just because the option is there in an app, (for example, being able to change the ROM's font in Rom Toolbox) that doesn't always mean that certain ROM is capable of font changes.