Package file was not signed correctly.

[GerryH]

Just rooted my HTC Desire using UnrEVOked.
Downloaded and installed Titanium Backup.
Tried to upgrade Superuser and got a "Package file was not signed correctly"
message.
What am I doing wrong?
Cheers
Gerry

 

[B A Doe]

I have the exact same issue. What is the fix for this?