hi,
i had encountered same problem with 4.1 vers.
then i changed location from the one to <HOME>/
webapps/examples/WEB-INF/classes for testing
purpose & it worked fine. then u need to
configure server.xml,web.xml to make ur own
pckgs.
dont forget to change context path.type in brw.
http://www.xxx.:<port pt>/examples/servlet/urfile.class
good luck.
Praveen