Hi,
may be i understood the problem.
When i patching jboss from 6.4.0 to new version, it make a new folder <JBOSS_HOME>/modules/system/layers/base/.overlays but picketlink installer (2.7.1 Final) install new library under <JBOSS_HOME>modules/system/layers/base/org/, seems ignore new overlay folder.
I copy picketlink module folder under new overlay directory and it works.