Patch 14062578 R12 : fails with "The driver file specified does not exist."

Hello,
Patch 14062578 R12 : fails with "The driver file specified does not exist."

The default directory is [/...../patch_appsTiers/14062578] :

Please enter the name of your AutoPatch driver file : u14062578.drv

The driver file specified does not exist. Please ensure that:
/...../patch_appsTiers/14062578/u14062578.drv
is the correct specification for the driver file.
If you have incorrectly specified the directory that contains the driver file,
you may enter the entire file specification at this time.


The driver exists in the directory but adpatch doesn't see it :

ls -l /..../patch_appsTiers/14062578/u14062578.drv
725364 May 11 01:51 /.../patch_appsTiers/14062578/u14062578.drv

Thanks a lot for your time and help.