Ultrasn0w won't install

[engelous]

Hi,

I have an iPhone 3GS, BB 6.15, iOS5.

I'm just done upgrading into iOS5, using sn0wbreeze. When I was done with the upgrade and restore from backup, I could not reinstall ultrasn0w, with Cydia telling me something along the lines of "sub-process usr/bin/dpkg error code 1". Does anyone have any idea what this might mean?

Thanks!