Yes, but on Windows, he wouldn't have gotten an error about not finding a file based on its case, he would've gotten an error if he tried using things that the module exports (most likely). Not that your advice is any less correct, it just couldn't have resulted in his error on a Windows system. He's either a) not on Windows, or b) on Windows and doesn't have the module.
Jeff japhy Pinyan,
P.L., P.M., P.O.D, X.S.:
Perl,
regex,
and perlhacker How can we ever be the sold short or the cheated, we who for every service have long ago been overpaid? ~~ Meister Eckhart