Thank you Rob! I went on a safari for stray copies of B.pm on my system and found some strange things. The problem was caused by altering @INC with a use lib statement that exposed a folder that for some forgotten reason has an old copy of B.pm 1.68 renamed to b.pm. But this has been the case for years and it still works like that on my old box. I wonder why perl 5.26.2 on macos 10.13.4 ignores my local copy of B at b.pm but perl 5.38.2 on macos 14.3 tries to use it and gets confused? I also don't see why this doesn't bother apache or morbo in either case.

The other oddity is not directly related to this problem but involves the system perl on Apple's latest macos: sonoma. My hunt for B.pm revealed that although the system perl is 5.30.3 there is also a full set of core modules for perl 5.34 installed from the factory: 

/System/Library/Perl/5.30/darwin-thread-multi-2level/B.pm
/System/Library/Perl/5.34/darwin-thread-multi-2level/B.pm
I guess they are planning an upgrade at some point... Thanks again!

www.cpan.org/ports/binaries.html#macos

In reply to Re^2: object version does not match by Anonymous Monk
in thread object version does not match by Anonymous Monk

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