Thank you for your post.
I don't have enough information to determine what is causing the problem.
Is this a one machine configuration, or is the web server on another machine? Have you uninstalled and reinstalled FileMaker Server? How much memory do you have on the Server? Does the red light appear immediately when Admin Console is launched?
It would probably be best if you contact our Technical Support department directly at toll-free 800-325-2747 so they can get you installed correctly, because they can ask and get answers immediately and know what steps to take next.
Our lead FM Admin found the problem; he compared every file relevant to web svcs on the "bad" sever to another sever where WPE was working properly. He found that a file size was different on a particular file that was part of the standard install.
When he replaced the small "bad" file with the larger "good" file, WPE began functioning properly.