Migrating data to new computer

[psy]

Hi: I've backed up data from my main computer (computer 1) onto my Buffalo Model HB-LB2.0TU3 hard drive. Now I'm trying to download that data onto a second computer (computer 2).

I've installed the Buffalo software onto computer 2, but when pull up the Buffalo Backup Utility Restore tool (version 1.2.5.1) on computer 2 and try to access the files on the Buffalo hard drive for download, I get an error message: "No compatible backups found." 

How do I migrate data from computer 1 to computer 2 using my Buffalo hard drive? Thanks.