[xwiki-users] Fwd: Problem migrating to filesystem attachments in 3.3

I currently have my attachments stored in the database and am attempting to migrate to filesystem storage. Toggling it seems to work fine for new attachments. My issue is with migrating attachments via the FileSystem Attachment Porter script (http://extensions.xwiki.org/xwiki/bin/view/Extension/Filesystem+Attachment+P...). Before running it, I change my config so that I'm back to using database attachments. I've updated the obsolete class references, and also whittled it down to just the doIt() method, but when running it, I receive the exception "Unknown entity: org.xwiki.store.legacy.doc.internal.ListAttachmentArchive" Please advise. Thanks ahead, Brian