html to pdf problem

[saikat]

Hi, I'm facing problems with converting a html file to pdf format.I'm using cocoon2.0 ,tomcat4.0.3 & j2sdk1.4.0   while running the file it is giving following error -->   org.apache.cocoon.ProcessingException: Could not read resource file:/C:/jakarta-tomcat-4.0.3/webapps/cocoon/mount/html-pdf/pageTwo.xml: java.lang.RuntimeException: org.apache.fop.apps.FOPException: 'master-name' (page) must be unique across page-masters and page-sequence-masters so please tell me wat to do with regards saikat