From javax.servlet.jsp.SkipPageException javadoc :
FROM
JSP 2.0
This particular exception thus indicates that your webapp /WEB-INF/lib or, even worse, JRE /lib or /lib/ext contaminated with specific JSP libraries with servlet containers such as jsp-api.jar or j2ee.jar that originated from another servletcontainer that only supports the older version of JSP.
You must absolutely make sure that in your webapp /WEB-INF/lib folder or somewhere else in the path to the runtime, you do not have servletcontainer-specific libraries that will take priority when loading the class over the target servlet server (in your case Tomcat 6.0 "s) own libraries.
The fact that they were posted is a common mistake of starters in an attempt to "fix" compilation errors. It needs to be addressed in different ways.
See also:
source share