The plugin does not work that's clear.
But not if the error is exported plugin.
I tube to insert the code manually sql and I found the sql code begins with a variable ""%%TBL-PREFIX%%"" change in all files "ow_" and it worked well.
Once you insert all files generated by the script dump.sql "Export data" I found that the media files do not appear in the Buckup .... another error.
Honestly I would like to know how to recover photos wall.fm. users.