Bug fix on error message.
Bug fix on error message.


git-svn-id: c3edda122e248ef33995da003806c930f62b9468@533 31904243-a364-42ac-a3db-9305396518ba

mcanthony/oiio,cwilling/oiio,lgritz/oiio,scott-wilson/oiio,scott-wilson/oiio,OpenImageIO/oiio,micler/oiio,mcanthony/oiio,sambler/oiio,micler/oiio,OpenImageIO/oiio,jeremyselan/oiio,YangYangTL/oiio,YangYangTL/oiio,sambler/oiio,scott-wilson/oiio,mcanthony/oiio,micler/oiio,mcanthony/oiio,lgritz/oiio,OpenImageIO/oiio,YangYangTL/oiio,lgritz/oiio,cwilling/oiio,bdeluca/oiio,OpenImageIO/oiio,cwilling/oiio,bdeluca/oiio,micler/oiio,YangYangTL/oiio,jeremyselan/oiio,scott-wilson/oiio,sambler/oiio,bdeluca/oiio,cwilling/oiio,jeremyselan/oiio,sambler/oiio,bdeluca/oiio,lgritz/oiio