Bitnami JasperServer Stack on a 64-Bit

I have installed the JS Stack on a 64-Bit machine.

Already during the installation I had an error which I solved by installing ia32-libs and it installed fine.

I can call up JasperServer in my browser, log in and see the reports uploaded via iReport. The Problem is when I try to open a report nothing happens (i.e. no error message).

So I fetched the error message out of the catalina.out log file and it starts off as follows:

946 ERROR [jasperserver],http-8081-
– Servlet.service() for servlet jasperserver threw exception
java.lang.NoClassDefFoundError

I think this is also a 64-Bit issue? Would anyone have any ideas?

cheers