Previous/Next Navigation Issues

Hi I am using geodirectory for a camping website. The campsites are in county categories when I go into listing of the county and open up a record, which is fine and if I go next I want to see another record in the same county. However no matter what county I select when I select next it takes me to another record that is not connected to the selection. It doesn’t even select other records randomly it goes to the same record over and over. Added to this by selecting next again another unrelated record is selected. And then if i go next I am in a loop of these 2 unrelated listings. I hope this makes sense and someone could advise. I can upload more info if required.