@jefferis: Have you tried disabling memento as suggested?
@bat11688173: in Dreamweaver, rest your workspace. Go to Window -> Workspace Layout -> Reset '<your layout name>', then Delete the Dreamweaver Cache file from the users configuration folder:
@full-font-graphics441929: Dreamweaver MX 2004 is not a supported platform. we no longer offer support for this Dreamweaver version.