in reply to Problems with Data::Printer and prototypes

I've never used this module, but looking at the man page (Data::Printer), I see something in the "Extra Tips" section that might help. Maybe if you put the following in both copies of your script, you might get consistent behavior: 
use Data::Printer use_prototypes => 0;

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Re^2: Problems with Data::Printer and prototypes
by mje (Curate) on Mar 10, 2016 at 17:15 UTC

    Thanks. That provided the hint. One machine has a .dataprinter file (with use_prototypes = 0) and the other does not.

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