The requested content appears to be script and will not be served by the static file handler.
For some (unknown at the time) reason I had this error while trying to view a WCF service app in the web browser. I googled (and binged) around and there was many reasons for that message.
My problem was that my brand new computer came with Microsoft .net 3.0 installed but IIS was not active. So I installed IIS after the WCF support so the WCF mime types were not installed.
To get this working all I had to do is running the following command:
C:\Windows\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\ServiceModelReg -i
Hope it helps someone else.