Same issue here
When I open Dreamweaver CS4 I get this error:
unable to find file WA_SiteToolsV2.htm in the Configuration/floaters directory. The floater will not be shown
then when I hit OK on security assist I get:
error starting floater: TypeError: MM.SiteToolsActivate is not a function
I have deleted the Cache file and rebooted. No luck.
Larry