There is your clue! Your WordPress has the "dataglob" (that ".dez") from the old server in the upload path setting, and since that it not on your new server, WordPress cannot create a directory under it!
The fix here is to go into the WordPress administrative back end, into the "Settings -> Miscellaneous" section, and reset the "Store Uploads in this folder" setting (Under "Uploading Files") to the default value ("Default is wp-content/uploads").
Save your changes and you should now be good to go.
--DreamHost Tech Support