You are supposed to use the ant build scripts to deploy the examples. Which example are you trying to run?
Well, im using ant... i had follow the instructions at
http://www.jboss.com/products/seam/EclipseCVS.html and some more recomendations given at the forums because the updates of this app to use the 4.0.4.CR2 of JBoss AS ... and the sample that im trying to run is JBoss Seam Booking...
Initially i got another error (because i didnt install the EJB conf of JBoss AS) , but this was clear because someone had the same error that i got..
thanks for your reply
I had the same problem when I copied the web.xml from one of the examples. Just remove the context-param from your web.xml and that should fix it.