Hi,
Please try the Grid in a separate blank project and see if it works. If that works, then try it in a blank page inside your current project.
If the blank project works but the blank page does not, then it has to do with the project. If your project requires login, then you can try to login and see if it works. If that works, then it has to do with your permission settings. Please see this post for more details:
http://www.essentialobjects.com/forum/postst1401_the-eo-web-controls-are-not-rendered.aspxWe will also be happy to take a look if you can have the project online so that we can see the problem.
Thanks!