As some of you know, Mac OS 10.6.4 breaks DMI compatibility. We have a quick DMI only update that’ll get you up and running again.
You can download DMI 2.5.2 for Mac OS 10.6.4 here.
UPDATE: You may have to manually remove Home -> Library -> Mail -> Bundles -> DayliteMailIntegration.bundle and then rerun the installer.
Until Next Time…