Question [Q] "Unfortunately, the process has stopped." boot loop

I flashed a new ROM (after backing up, wiping, etc.) and finished restoring via Titanium. Then I rebooted my phone, but once I got out of the boot animation, I was greeted with "Unfortunately, the process has stopped." Then I was thrown back into the boot animation, then back to the message, then back into boot animation, etc., etc.

Anyone know how I can fix this? Do I have to go back to a full factory reset and start all over again?