Does anyone have a link and installation instructions to the Pentaho tool used to navigate,browse, create calculated members for Mondrian OLAP cubes?

I have downloaded the jpivot olap tool, copied the war file to apache’s webapp subdirectory and started tomcat, but when I go to http://localhost:8080/jpivot, all I see is a demo web page, i was expecting to see application buttons like 'MDX', Filter etc.
Instead it looks like this:
Pivot Demonstration

Using the Mondrian OLAP engine

And when I click on one of the links, I get apache errors:
org.apache.jasper.JasperException: An exception occurred processing JSP page /test/param3.jsp at line 23 20: 21: Click on a Product. 22: