You will definitely need to update the search form again so that it's method is set to post since all of the values on the results page are looking for the posted elements. What happens if you just click on the submit button without setting any criteria? What browser are you testing this with? What happens if you browse to the results page directly without ever entering search criteria?
The thing that catches my attention is the trigger, it seems like it might not be triggered properly and this would cause it to not display any results.