While applying patch 16328540:R12.INV.B we get an adrelink error

While applying the patch 16328540:R12.INV.B we get an error "adrelink is exiting with status 1". When I check the adrelink log we find the following error.
===========================================================================================
*** Error code 1
make: Fatal error: Command failed for target
`/u01/R12_DEV/apps/apps_st/appl/gmf/12.0.0/bin/GMFACOST'
Done with link of gmf executable 'GMFACOST' on Thu Jan 16 13:12:57 AST 2014

Relink of module "GMFACOST" failed.
See error messages above (also recorded in log file) for possible
reasons for the failure.  Also, please check that the Unix userid
running adrelink has read, write, and execute permissions
on the directory /u01/R12_DEV/apps/apps_st/appl/gmf/12.0.0/bin,