Thank you for your thoughts.
Unfortunately, Storable and JSON aren't installed.
And given that the script is to be used by a larger group of people, getting them to do a local install first is a bit of a pain.

In reply to Re^2: Help requested to find the cause of an "uninitialized value" message by andyok
in thread Help requested to find the cause of an "uninitialized value" message by andyok

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