Mark, Try running g2ctl.pl on your grib-2 file: g2ctl.pl -verf c:\grib\input_new\multi_1.wc_4m.t12z.grib2 Do get the same access denied error? Arlindo -- Arlindo da Silva dasilva at alum.mit.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: http://gradsusr.org/pipermail/gradsusr/attachments/20080410/e8f33657/attachment.html