Hi Steve,
I was facing issue with content deployments in moss 2007.Error details below
Destination list already exists.
I managed to resolve by doing an manual export and import from authoring site to a new site in authoring site and running deployment job to deploy new site and then delete the old site which was throwing errors on content deployment.
Not sure if its a recommended approach but worked nevertheless!!
Regards
Laxmi
laxmiprasadng123@gmail.com