Web app context not being processed in JBoss 5.1 for Cactus test case

Configuring context-root in application.xml for Cactus test case works on JBoss 4.2.3 AS but not on JBoss 5.1 AS. Please deploy the attached .ear file to both JBoss 4.2.3 and JBoss 5.1 servers, and run Cactus test case from IDE. Cactus test app runs fine in JBoss 4.2.3, but not JBoss 5.1. Tried multiple configurations, including adding a context.xml file with the context path name to META-INF folder, and then to WEB-INF/lib (in separate tests). Both tests failed in JBoss 5.1.

I have attached the .ear file that I tested with on my machine, and the Eclipse projects to build the web app. The code is from the samples/ejb3 folder of the Cactus 1.8.1 distribution.

Thanks.