Illustrator CS, Acrobat 6: When I try to print my Illustrator file to Acrobat, I get this error message:

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Print to PDF: Unable to find "Adobe PDF" resource file.
D:\Documents and Settings\All Users\Documents\Adobe PDF 6.0\Settings\(square symbol).joboptions
Do you want to run the installer in repair mode?
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So, I run the installer. Try to print to PDF and get the same error message.

Any suggestions?