Thread:Extension talk:TemplateData/Blank Pages/reply

What could be happening is the server is processing all those templates, but runs out of memory to do so, thus outputting an empty page. Brickimedia encounters this periodically on very large, resource-intensive pages. The best solution if you can't get more memory/RAM for your server would be to try to cut down on how resource-intensive the page is. A way to maybe do this while still displaying your templates would be substituting templates. That is if this is your issue. You may be experiencing a different issue, but this is just what it sounds like from my experience.