There is an incompatibility between SY transformations and the version of xalan/serializer now present in the EAP beta release (BZ 960890). We need to revert the xalan/serializer versions back to those present in the alpha release, using the soa module override, as a workaround until this can be addressed.
EAP 6.1 Alpha: xalan-2.7.1.jbossorg-1.jar serializer-2.7.1.jbossorg-1.jar
Module override applied in DR4
verified in DR4.