Why do I get "version (5.12.2) doesn't match executable version" with Perl's PAR?

Question

When I run the following to create an executable out of my Perl script:

pp -o process_target_mode_data Process_Target_Mode_Data.pl

I get the following error output:

 Perl lib version (5.12.2) doesn't match executable version (v5.12.0) at /home/Neil/ActivePerl-5.12/lib/Config.pm line 50.

Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/Errno.pm line 8.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/Errno.pm line 8.
Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/File/Temp.pm line 148.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/File/Temp.pm line 148.
Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/Archive/Zip.pm line 14.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/Archive/Zip.pm line 14.
Compilation failed in require at -e line 459.

/home/Neil/ActivePerl-5.12/site/bin/pp: Failed to extract a parl from 'PAR::StrippedPARL::Static' to file 'parleNrP2Xi' at /home/Neil/ActivePerl-5.12/site/lib/PAR/Packer.pm line 1172, <DATA> line 1.

Could someone explain to me what is going on and how I can resolve this problem?

Info brian d foy requested:

[bash-3.2][Neil@willy]$  which pp
/home/Neil/ActivePerl-5.12/site/bin/pp

[bash-3.2][Neil@willy]$   /home/Neil/ActivePerl-5.12/site/bin/pp -o process_target_mode_data Process_Target_Mode_Data.pl
Perl lib version (5.12.2) doesn't match executable version (v5.12.0) at /home/Neil/ActivePerl-5.12/lib/Config.pm line 50.
Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/Errno.pm line 8.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/Errno.pm line 8.
Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/File/Temp.pm line 148.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/File/Temp.pm line 148.
Compilation failed in require at /home/Neil/ActivePerl-5.12/lib/Archive/Zip.pm line 14.
BEGIN failed--compilation aborted at /home/Neil/ActivePerl-5.12/lib/Archive/Zip.pm line 14.
Compilation failed in require at -e line 459.
/home/Neil/ActivePerl-5.12/site/bin/pp: Failed to extract a parl from 'PAR::StrippedPARL::Static' to file 'parludZfldz' at /home/Neil/ActivePerl-5.12/site/lib/PAR/Packer.pm line 1172,  line 1.
[bash-3.2][Neil@willy]$  


[bash-3.2][Neil@willy]$  /home/Neil/ActivePerl-5.12/bin/cpan -l | grep PAR
PAR     1.002
PAR::Dist       0.47
PAR::Heavy      0.12
PAR::Filter     0.03
PAR::SetupTemp  1.002
PAR::SetupProgname      1.002
PAR::Packer     1.006
PAR::StrippedPARL::Dynamic      0.958
PAR::StrippedPARL::Static       0.958
PAR::StrippedPARL::Base 0.975
PAR::Filter::Bytecode   undef
PAR::Filter::Bleach     undef
PAR::Filter::Obfuscate  undef
PAR::Filter::PatchContent       undef
PAR::Filter::PodStrip   undef
App::Packer::PAR        0.91

Answer 1

Perl lib version (5.12.2) doesn't match executable version (v5.12.0)

Some parts of your Perl installation are at a different version than others. More specifically, if you look at /home/Neil/ActivePerl-5.12/lib/Config.pm line 50, you will see that there is an explicit comparison of the version of Perl being executed (which is 5.12.0) to the version of the Config.pm library being used (5.12.2).

If you perform a new installation of ActivePerl 5.12.2 (to bring all components up to the same version), this error should go away.