Contents of my_script.pl and modules are

Line# 1 ## Comments
..
     11## Comments
     12
     13 use strict;
     14
     15 use Getopt::Std; # Command line options processing
     16
     17 use lib "/app/base_lib/cpath1";
---->18 use mypkg1::common_mod2 qw(:all);
[download]

Contents of common_mod2.pm are

Line# 1 package mypkg1::common_mod2;
      2
      3 ################################################
    #commnets ..
..
     12 ################################################
     13
     14 use strict;
     15 use LWP::UserAgent;
     16 use HTTP::Request::Common;
     17 use XML::Simple;
     18
     19 use lib "/app/base_lib/cpath1";
---->20 use mypkg1::common_mod1 qw(:all);
[download]

Contents of common_mod1.pm are

Line# 1#comments
..
     82#comments
     83 # Listed here are the other packages 
     84 use Cwd qw(abs_path);    
     85 use File::Basename;      
     86 use Fcntl qw( :flock );  
     87 use lib "/app/base_lib/cpath1";
---->88 use MYLIBS qw( :all );
     89 use MYLogging;
     90 use Digest::SHA1 qw(sha1_hex);
[download]

Contents of MYLIBS.pm are

Line 1 #
..
     15 ##############################################################
+##########
        #####
     16 package MYLIBS;
     17
     18 use strict;
     19 use XML::Simple;
     20 use Data::Dumper;
[download]

I have posted code snippet for the errors above, any thought what could be the reason for these errors?

Could it be due to version incompatibility of packages perl(perl-5.8.5-57) , libxml2( package(2.6.16-12.9 ) or perl-xml ?