I recently tried out the 4.3 firmware, but after being underwhelmed with the new features, I decided to downgrade back to 4.2.1. After doing so, I installed FullForce and RetinaPad. Both installed successfully, but when I went into the Settings menu to change which apps would use these extensions, I noticed that not only were FullForce and RetinaPad under "Extensions," but Safari, Mail, Notes, and even General settings (among others) were under "Extensions." I tried reinstalling Mobile Substrate and Preferenceloader, but I had the same result.

Any ideas/solutions? I really do appreciate any help.