http://blogs.technet.com/stefan_gossner/archive/2008/03/25/wss-moss-common-issue-error-message-unknown-compression-type-in-a-cabinet-folder-during-export.aspxAnother issue which I have seen a couple of times in the past when using STSADM -o export or content deployment is a failure during the export phase with the following error message: Failed to create package file Unknown compression type in a cabineten-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/stefan_gossner/archive/2008/03/25/wss-moss-common-issue-error-message-unknown-compression-type-in-a-cabinet-folder-during-export.aspx#3157168Thu, 20 Nov 2008 23:59:34 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3157168Jennie C.<p>Thanks so much - this was exactly the problem!</p>