Have you tried to restore the setting through Tools | Import and Export settings?
Be sure to read the help first, and make a backup of your current settings.
Imar
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Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of
ASP.NET 2.0 Instant Results and
Beginning Dreamweaver MX / MX 2004