Error trying to process posts export

[Casemon]

Exported posts from WP site, extension gives this error immediately after clicking Create Local Data:

Warning: Invalid argument supplied for foreach() in /Users/Casemon/Sites/bdg.dev/packages/wordpress_site_importer/controllers/dashboard/wordpress_import/file.php on line 35

Fatal error: Call to a member function getDocNamespaces() on a non-object in /Users/Casemon/Sites/bdg.dev/packages/wordpress_site_importer/controllers/dashboard/wordpress_import/file.php on line 45

Processing export of pages only works fine :)

[Chrouglas]

I got something similar. Unfortunately it worked perfectly on my test server then when I moved it to a live site it gave me an error on trying to import.