I have an issue on my site that i have reviews on my site for different products. They show up when I look at them as a whole (not product specific). But when I look at them product specific, its just a blank page in the middle. Any ideas where to start?

The only thing i've changed is a query to look for a city of the customer.

Then I got rid of the Last name of the customer. So it will not just says Customer from City after the review.