I got this exception when deploying simple web archive on eap 5.1. I just deployed it using drag & drop method. Since I was not able to reproduce it again, I don't find this to be blocker. Can you just look at it and possibly fix the NPE? At least we know it can occur here.

java.lang.NullPointerException
at org.jboss.ide.eclipse.as.core.extensions.jmx.JBossServerConnectionProvider.run(JBossServerConnectionProvider.java:51)
at org.jboss.ide.eclipse.as.core.server.internal.LocalJBossBehaviorDelegate.publishStart(LocalJBossBehaviorDelegate.java:185)
at org.jboss.ide.eclipse.as.core.server.internal.JBossServerBehavior.publishStart(JBossServerBehavior.java:107)
at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:923)
at org.eclipse.wst.server.core.model.ServerBehaviourDelegate.publish(ServerBehaviourDelegate.java:775)
at org.eclipse.wst.server.core.internal.Server.publishImpl(Server.java:2889)
at org.eclipse.wst.server.core.internal.Server$PublishJob.run(Server.java:337)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)