Datagrid not visible at runtime

Question

I'm having a problem with a datagrid appearing during runtime. I have data bound to it from a dataset but it still doesn't appear. I have a datagrid on another page that works and displays properly. I've checked for a visible or enable property to false and all are set to true. When I view the source for the page with the absent datagrid it displays a HTML for the datagrid but it displays this: Any ideas for what's wrong. I'm stumped. I've even tried creating a new page and project using different tables and no new datagrid that I try to create will appear. Thanks