After upgrading to tiger the programs ical, mail, preview, & worldbook will not open. If i us Pacifist and update the first three they will work temporarily, around 24 hours, then they stop. Worldbook was an install before shipping and I don't have a install disk for it.
I do have and external hard drive that backs up nighlty.

What can I do to fix this? :sad:

have you gone to Disk Utility and repaired disk permissions?

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