Jrun and Netscape 7.2

Hello,
I have a problem with the component on my Jrun server. The component simply does not show up on NS7.2,Mozilla and Firefox. However this does not happen on my other tomcat installation. I am assuming this is some problem connected with Jrun server. Any suggestions?

Check that you have gecko.xml in stylesheets directory and that it is served with Content-type: text/xml header.