R12.1.3 : Patch 18004477 FAILED: file payzztabdic00005.ldt on worker

hello,

Patch 18004477 is failing pre-req already done as mentioned in readme.txt

BUG_NUMBER                     CREATION_
------------------------------ ---------
8919491                        29-AUG-14
8919491                        29-AUG-14
9239089                        13-APR-12

patch error:
=======
ATTENTION: All workers either have failed or are waiting:

           FAILED: file payzztabdic00005.ldt on worker  1.
           FAILED: file hxczzrespon00016.ldt on worker  2.
           FAILED: file payzztabdic00150.ldt on worker  4.
           FAILED: file perzztabdic00031.ldt on worker  6.
           FAILED: file hxczzrespon00015.ldt on worker  7.
           FAILED: file payzzvewdic00017.ldt on worker  8.
           FAILED: file sspzztabdic00000.ldt on worker  9.
           FAILED: file perzzrespon00101.ldt on worker 10.
           FAILED: file payzztabdic00016.ldt on worker 11.
           FAILED: file perzztabdic00016.ldt on worker 12.
           FAILED: file ghrzztabdic00000.ldt on worker 14.
           FAILED: file perzzvewdic00065.ldt on worker 16.