Hi there,

I created a war file of my forrest project ('forrest war' => build 
successfully) and now I'm trying to deploy the project to tomcat 6. 
Unfortunatly I get the following error when I try to access the application in 
the browser:

<error_msg>
Internal Server Error

Message: null
Description: No details available.
Sender: org.apache.cocoon.servlet.CocoonServlet
Source: Cocoon Servlet
cause
   org.apache.cocoon.blocks.fop.FOPNGSerializer
Request URI
request-uri
   /zedoc/
Apache Cocoon 2.1.12-dev
</error_msg>

I looked into the cocoon-fop-block.jar and found a class FOPSerializer but no 
class FOPNGSerializer. Can someone help me how to solve this problem?

I'm using 0.9-dev (checked out yesterday from the trunk of the svn repository). 

Many thanks in advance
Dieter