Any ideas on what may be causing the lib mismatch issue? And how to correct?
Usually, modules compiled for 5.12.0 will work on 5.12.3, for the most part the x in 5.12.x is ignored
But PAR/PAR::Packer being parl.exe and parldyn.exe (essentially perl.exe), now needs/wants exact equivalence of all three number. I can't tell if this is by design, or if its an oversight, but it makes getting PAR via ppm useless
You will have to remove the ppm installed PAR/PAR::Packer and compile PAR/PAR::Packer yourself. It should be as easy as cpan install PAR::Packer or cpanp i PAR::Packer