I had the same thing on Friday after I did the 2.0.2 upgrade - i emailed the guys over at RipDev and they responded with this:
Try to re-install:
1. Mobile Enhancer
2. RiPDev Preferences
3. Kate
4. Reboot your iPhone
All 3 were listed on my phone as installed, so I removed them all, re-booted, then re-installed them, rebooted and it works fine now.