first question: where did you put the logo.html? The given URI is relative to the webserver root, not the web application root!
second question: no. The codes are for standard HTTP error codes, not Java exceptions.
Joined: Feb 16, 2001
NO: the URI is wrt to the web app root!!i am working on weblogic i which there is only one root and that is your web-app root.the concept of web-server root is with tomcat where you have to put your web-app folder in parallel to the web-server ROOT directory which is the defalut web-app.