I guess that you have another Perl binary lying around, and this other binary is associated with .pl files. This would explain that some modules are found (those have been installed under the other Perl binary as well, or are part of the Core like Storable).

You can add a line to your script and compare the results of the different invocations:

print "Perl interpreter: $^X\n";

In reply to Re^3: Interpreter can't find known installed mods (w10) by haj
in thread Interpreter can't find known installed mods (w10) by cormanaz

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