Applying EOY Phase 1 2013 and adpatch fails on file XDOLoader.class

VPC Team member opened this thread for the customer.

Release 11.5.10.2
Oracle Solaris on SPARC (32-bit)

Applying patch 17535554 to our GOSBOX RAC environment and patch fails on file XDOLoader.class. 
13 workers have failed and attempts to restart the workers result in the same error. 
Patch was successfully applied to our GODEV environment.

ATTENTION: All workers either have failed or are waiting:

    FAILED: file XDOLoader.class on worker  1.
    FAILED: file XDOLoader.class on worker  2.
    FAILED: file XDOLoader.class on worker  3.
    FAILED: file XDOLoader.class on worker  4.
    FAILED: file XDOLoader.class on worker  5.
    FAILED: file XDOLoader.class on worker  6.
    FAILED: file XDOLoader.class on worker  7.