Installation question

I'm trying to upgrade a Peachtree 2006 installation to Complete Accounting 2009. The error I recieve is: "a required file in the company folder
cannot be read. the installation will exit" 2006 runs just fine and I can see my F: drive which is mapped to a network share where the data is presently installed. I've tried installing with a user with full administrative rights and I revieve the same error. Has anyone else had a similar issue?
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