You're using the values of the array as hash references $temp_dcr{$key}{RightNavLaunchDate}; are you sure that they are actually hash references and not array references?

perldiag: 

       Can't coerce array into hash
           (F) You used an array where a hash was expected, but
           the array has no information on how to map from keys
           to array indices.  You can do that only with arrays
           that have a hash reference at index 0.

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In reply to Re: Hash Problems by chipmunk
in thread Hash Problems by wstarrs

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