in reply to Data::Dumper version

You did not upgrade correctly, see explanation below. To repair this, you need to run the extra build steps. Use a CPAN client to automate this. Force the installation if necessary.

You are getting the error message because the compiled XS part does not match the Perl part of the modules. You upgraded one, but not the other. It is wrong to just copy .pm files around.

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Re^2: Data::Dumper version
by Anonymous Monk on Jan 09, 2012 at 13:01 UTC
    You refer to a perldoc page ("extra build steps") but clarification of exactly what to do with that information would be helpful for posterity . . . if not for the OP then for the next Monk.
Re^2: Data::Dumper version
by ForgotPasswordAgain (Vicar) on Jan 11, 2012 at 21:34 UTC
    The OP obviously did use the `cpan` client, as you see they mentioned "Database was generated on...." and "Data::Dumper is up to date".