i downloaded jbpm5.1 installed the demo, run the demo, added the sample into guvnor repository from eclipse, started

http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/Guvnor.html#asset=f06b52a1-81d6-4d07-b122-7dd2a20618bf

this stops at " pls wait while loading" there are no errors found in the log. however the sample design is not shown on the web.

I use jdk6.1.0.24, jbpm5.1,  designer.version=1.0.0.055-jboss.

Attached my server log for reference.

Kindly help, stuck with this for quite long while.