Bossprefs just crashes.... won't work

I've installed bossprefs, but when I load it, it just closes right away. Anyone know why?
iPhone 3gs 32gb
iOS 4.01
JB with jailbreakme.com

I have the exact same setup / problem as you. I have just been using sbsettings instead.

Bossprefs closes because it's not compatible with iOS 4.0 or >. SBSettings replaced it.