Hi,
could you please check if the error also occurs if you are defining the page reference in an absolute way, i.e. "/xxx/welcom.jsp". The "/"-root is the directory of your web application, e.g.
Code:
webapps/
mywebapp/
WEB-INF/
xyz/
abcde.jsp
would be "/xyz/abcde.jsp".
Thanks! Björn