SpamAssassin: UTF-16 surrogate 0xd800 at /usr/local/share/perl5/Pod/Simple/BlackBox.pm line 67

When my Spam Assassin cron job runs, it gives Perl error messages which are then emailed to me by the cron daemon. How can I fix this error or warning? Cron job: /usr/share/spamassassin/sa-update.cron 2>&1 | tee -a /var/log/sa-update.log UTF-16 surrogate 0xd800 at /usr/local/share/perl5/Pod/Simple/BlackBox.pm line 67. UTF-16 surrogate 0xd800 at /usr/local/share/perl5/Pod/Simple/BlackBox.pm line 67. UTF-16 surrogate 0xd800 at /usr/local/share/perl5/Pod/Simple/BlackBox.pm line 67. I have the latest Perl from CentOS 6 Yum packages, 5.10.1. My Mail::SpamAssassin is up to date (3.004004).