Admin Console fails to load when unexploded EAR containing an EJB module JAR exists in the deploy directory

Issue

• When an EAP instance has an EAR deployed to it which contains an EJB module JAR and the EAR is in an unexploded form (archived), attempting to access the admin-console results in the following exception:

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/admin-console]] (http-0.0.0.0-8080-1) Exception sending request initialized lifecycle event to listener instance of class org.jboss.on.embedded.LazyStartupListener
java.lang.RuntimeException: Error handling file /opt/jboss/jboss-eap-5.1/jboss-as/server/production/deploy/exolgan-legacy-ejb.ear/exolgan-legacy-ejb.jar
at org.jboss.seam.deployment.URLScanner.handleArchiveByFile(URLScanner.java:134)
at org.jboss.seam.deployment.URLScanner.handle(URLScanner.java:107)
at org.jboss.seam.deployment.URLScanner.scanResources(URLScanner.java:90)
at org.jboss.seam.deployment.StandardDeploymentStrategy.scan(StandardDeploymentStrategy.java:119)
...........
Caused by: java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:131)
at java.util.zip.ZipFile.<init>(ZipFile.java:148)
at org.jboss.seam.deployment.URLScanner.handleArchiveByFile(URLScanner.java:123)