#7 Error in Config.pm

[L Stevens]

I have successfully installed mailscanner-mrtg-0.11.00_6 on Freebsd 8.2
When installing same version on FreeBSD 9.0-Stable running:
/usr/local/sbin/mailscanner-mrtg loadavg
gives the following error:
Use of uninitialized value within %MSMRTG::Config::EtoI in lc at /usr/local/lib/MailScanner-MRTG/MSMRTG/Config.pm line 51, <GEN0> line 13.