[rules-users] service() for servlet PluginServiceServlet threw exception: java.lang.IllegalArgumentException: No plugin by the name of plugins

[saihegde]

I need to change the designer context root to support multiple instances of
guvnor and thereby designer on the same server.
I did by changing the following files

guvnor.war/WEB-INF/jboss-web.xml - Change context root
guvnor.war/WEB-INF/beans.xml - Configure jcr repository location
guvnor.war/classes/preferences.properties - Configure designer context root 

designer.war/WEB-INF/jboss-web.xml - Change context root
designer.war/profiles/jbpm.xml - Configure guvnor context root

The default one does come up fine, but the other fails to load the designer
with the following exception.

12:27:36,369 ERROR
[org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/designer01].[PluginServiceServlet]]
(http--127.0.0.1-8
ervlet.service() for servlet PluginServiceServlet threw exception:
java.lang.IllegalArgumentException: No plugin by the name of plugins
        at
org.jbpm.designer.web.plugin.impl.PluginServiceServlet.retrievePluginContents(PluginServiceServlet.java:93)
[classes:]
        at
org.jbpm.designer.web.plugin.impl.PluginServiceServlet.doGet(PluginServiceServlet.java:71)
[classes:]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
[jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
        at
org.jbpm.designer.web.filter.impl.PluggableFilter.doFilter(PluggableFilter.java:70)
[classes:]
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
[jbossweb-7.0.13.Final.jar:]
        at
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
[jboss-as-web-7.1.1.Fina
1.1.Final]
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
[jbossweb-7.0.13.Final.jar:]
        at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
[jbossweb-7.0.13.Final.jar:]
        at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_30]



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