Are you still using the ->all array? You can't use that with get_paged_iterated. Check the examples on that page to see how you should loop over the object directly.
From 1.7 onward, the recommended way to iterate a DMZ result is to loop over the object directly (it will know what you want), and to get the number of results from a query is to use result_count().
(This is noted in the big yellow box on the get_iterated page.)
