It looks like perl can't find it's libraries.

As others have already said, cron runs with a limited environment, including a limited PATH. Some things to consider:

• Are you running the perl binary you think you are? Since the PATH is different, it might be finding another perl (and another Config.pm which lists a different @INC).
• Does your shell environment have a PERL5LIB? You'll need that in the crontab too, or you can use lib qw() inside the script.

If neither of thosee fix it we'll have to get more creative.

Good luck! :)