I've found what stops it working \o/

I have PERL_UNICODE=SAL in my environment for Perl 5.14.0. If I unset PERL_UNICODE it works. I've no idea why.

Correction, I've a good idea why - files being opened in a different mode.

See OP for real solution.

In reply to Re^5: "certificate verify failed" difference between Perl 5.14 and 5.10 by mje
in thread "certificate verify failed" difference between Perl 5.14 and 5.10 by mje

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