I got some feedback that some users running Snow Leopard were crashing every time they started UNF.
Turns out there was a method being used on a Cocoa control that required changes made in the 10.7 SDK. I rewrote the function to not need the method and have released a new version (version 1 build 701). All download links are updated but you can download the new version here:
Lion users don’t need to update.