So after spending two days settings up this thing on 5.0.1 from 4.1, I had accidentally moved the PerferencesBunble folder without noticing, so my Preferences wouldnt start. After fixing it, I opened Cydia and there was a MobileSubsturate update, after updating, I resprung and was kicked into safe mode. But, there as no pop-up saying "This was caused by blah blah blah...", it just kicks me into safe mode with no way out. I can't launch any programs outside of the stock ones. So, now I'm stuck. I spent all that time working on this thing for this to happen.