I have been using Dreamweaver for years. Beginning today I get error code 150:30 and it won't start. It is version 10.0, build 4117 (2008).
See if this kb Licensing note helps:
@Frank: To add to Ben's suggestion about the Licensing Repair tool, see if this helps: http://helpx.adobe.com/x-productkb/global/error-licensing-stopped-mac-os.html
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