I still have the same problem on Tomcat 7.0.41 with guvnor-distribution-5.5.0.Final.zip and jbpm-designer-2.4.0.Final-tomcat.war.
The only indication of a problem is the following line in the Log: SEVERE: Unable to connect to Gunvor. Is it running? [Connection refused: connect]
I use the names 'designer.war' and 'drools-guvnor.war'
In 'designer\profiles\jbpm.xml' there is the entry
<externalloadurl protocol="http" host="localhost:8080"
subdomain="drools-guvnor/org.drools.guvnor.Guvnor/oryxeditor" usr="admin" pwd="admin"/>
When I try to connect to http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/oryxeditor in Firefox I get a connection failed?
Any suggestions?