Chapter 1, page 16 of the Final Cut Express 2.0 manual reads:
"Minimum Allowable Free Space on Scratch Disks: In the System Settings Scratch Disks tab (choose Final Cut Express > System Settings), change this value from 50 MB to 500 MB."
It should read:
"Minimum Allowable Free Space on Scratch Disks: In the System Settings Scratch Disks tab (choose Final Cut Express > System Settings), change this value from 10 MB to 500 MB."