Re: More on "IO object version does not match bootstrap parameter" error

I just struugled through this problem. I fixed it by noticing that some modules I installed via sudo /usr/bin/cpan were installed with a umask 027, meaning that I, as "other", saw an inconsistent view of my Perl library space. When I fixed the permissions, the problem went away.

To address why perl loads the latest IO.pm but an older IO.so, assume the latest IO.so is mode r-xr-x--- (550). Perl will try to load the first readable IO.so it can find, which won't match the latest IO.pm

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Re^2: More on "IO object version does not match bootstrap parameter" error by Preceptor (Deacon) on Aug 06, 2014 at 10:12 UTC
A bit of an old thread, but it solved my problem so I shall comment. Some of my mods were installed without global Read/Write, and so version mismatches were occurring when running as e.g. root vs. not root. `chmod -R a+rX /usr/local/lib/perl5/site_perl/5.18.1` [download] Resolved the problem.	[reply] [d/l]