Tech Tool 4 restart problems

[Melissa Crowe]

Hello All,
Since installing Panther on my DP 1G Quicksilver I have had no 
problems or kernel panic - till today. After startup & no activity, 
it panicked. I decided to try Tech Tool 4 (which just finally 
arrived) and in the middle of testing, my G4 restarts (back to the 
harddrive startup disk, rather than the Tech Took disk. Anyone else 
have similar problems with Tech Tool?
Thanks,
Melissa