I've never used Jellywiz, but is Superuser built in under your settings, or is it a standalone program? I've had poor luck with SuperSU, but superuser is built in to CM10 and AOKP roms, and has never missed a beat. Have you tried uninstalling, boot to recovery, wiping cache/dalvik, rebooting, and reinstalling?
Did you follow the installation instructions on the forum to the T? It seems to be pretty particular as to the installation process, unlike others I have used.
Droid RAZR XT912 (Daily Commuter) - LiquidSmooth 2.9
Galaxy S3 SCH-i535 - Stock
Galaxy S Fascinate SCH-i500 - Super Frankenclean 2.8
Motorola Droid 2 A955 - Stock
Droid X MB810 - Stock, and limping