I've been told by our developer that this message can be ignored. This is a WordPress bug, and the plugin should activate even thought it says it doesn't. You should still see the Contest Burner admin area in your sidebar of your admin area.

WordPress to version 3.0.4 or higher should not display this error.

If it didn't activate, if you hold down shift and then hit refresh, you should be able to activate the plugin without any errors.

If this does not work, try logging into your Wordpress installation with a different browser, or on a different computer and see if you can get it to work that way.

Please submit a support ticket if that does not work for you.