the file structure is like
C:\Documents and Settings\<Your User Name>\Application Data\Adobe\Dreamweaver CS4\zh-tw\Configuration\Shared\Webassist\Surveyor\ Library
in my computer .....
only a little change the en-us is zh-tw in my computer....
not only this app but also site assist professional meet the similar problem...
but I'LL try again to delete the file you told me....
if it solves , I'll report here...