SD problems to 3 partition drive--hangs

[ben10friend]

I have SD installed on my Powerbook G4 1.5 and my wife's Macbook Core 2 Duo 2 GHz. Both are running the latest version of Tiger. To back up both computers, I got a 400 GB HD that I installed in an HD USB/FW enclosure. I used Mac Disc Utility to partition the drive into two 80 GB and one 200+ GB parts (GUID). I ran SD (trial version) to back up my Powerbook G4 onto one of the 80 GB partitions and it worked well. However, when I try to back up the Macbook, SD just hangs at step 2 (Copy Files). It says that it is copying files, but nothing happens--the elapsed time indicator still goes but it stays at "0 of 400... files evaluated". I tried rebooting then erasing and zeroing the target partition, but that didn't work. I have purchased SD, but registration doesn't affect this error. How can I get SD to work to clone my wife's Macbook? (By the way, the third--200+ GB--partition is almost half full with data).