Mighty Mike is working on getting a PRL Updater for us. There is no ETA posted but that should fix the issues that we are having here.
http://forum.ppcgeeks.com/showthread.php?t=79579
Q: How do I do a PRL update on this ROM?
A: Mighty is working on it, stay posted.
Until then the solution is to flash back to stock, do the PRL update and then flash back to your custom rom.