Projects Release Update Pack 6 fails with FAILED: file pa_projects_all.xdf

Hi,
Apps 12.1.3

Applying patch 17839156 (PA  Update Pack 6) and it failed.

Adpatch log

Starting up the process.
- Telling worker to read todo restart file.

Done restarting worker.

  FAILED: file pa_projects_all.xdf on worker  2 for product pa  username APPS.

Time is: Thu Jan 30 2014 11:17:45


ATTENTION: All workers either have failed or are waiting:

  FAILED: file pa_projects_all.xdf on worker  2.

ATTENTION: Please fix the above failed worker(s) so the manager can continue.

Current time is: Thu Jan 30 2014 11:17:45

Restarted: file pa_projects_all.xdf on worker  2
-----------------------------------------------------
adworker02.log shows

Applying XDF file : /u02/oracle/OEDPCHD/apps/apps_st/appl/pa/12.0.0/patch/115/xdf/pa_projects_all.xdf