I know we had this problem with Seam 2.0.0 before the GA release..
I am getting an Invalid Content(no root node) on the persistence.xml in sr/MODEl/META_INF on project creation..
Eclipse 3.3..1.1 the new version of JBoss Tools..
Changing JBpss AS to sub directory on C drive did not change the error..
OS is Windows XP..
It should go away once I have stuff in the project right?
Ask on JBoss Tools forum