This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Did you change anything in JBoss AS? .war are by default picked up by the war deployer. However, this error message suggests that it's not being recognized by that deployer? Do you have a WEB-INF/web.xml in that .war?