perl $FOO/foo.pl -bla bla bla 
IO object version 1.20 does not match bootstrap parameter 1.15 at /usr/local/lib
/perl5/5.6.1//sun4-solaris/DynaLoader.pm line 225.
Compilation failed in require at /.../perl/lib/Custom_mods/logfile.
pm line 49.
BEGIN failed--compilation aborted at /.../perl/lib/Custom_mods/logf
ile.pm line 49.
Compilation failed in require at /abc/123/foo.pl line 9
3.
BEGIN failed--compilation aborted at /abc/123/foo.pl li
ne 93.


##</code><code>##

/usr/local/lib/perl5/5.6.1//sun4-solaris/DynaLoader.pm