Ok using Data::Dumper to determine how the data looks I get Tool::size on Sol and size on HP... Like this

If I access the data like so $t->{size} it works fine on HP and on Sol I have to do this to get the same result $t->Tool::size notice there are not braces on the Sol version. That is another quandry.

Is that helpful? I have read everything I could find re:Class::Struct which isn't much incidentaly.

And really this is my lack of real OOP knowledge that caused me to use this approach. I don't have a month to learn OOP just to repair this issue. When I first did this we only had HP so there was NO issue.