I am assuming in fdisk that you chose option 3, use entire disk for unix.
Did you check for bad tracks? If you did not, try to and see if you can do a destructive check.

Divvy then asks how many files systems do you want ?
Then asks if you want to make any changes?
Are you at this point entering additional filesystems, or just changing the size of the file systems that were automatically created?
Do any of the start/end addresses overlap?

As an alternative, why not try running divvy using all the defaults, and answering no to making any changes, and see if this setup terminates normally. You can always go back and change it afterwards.