[Mimedefang] filter error

[Marco Berizzi]

Hello everybody.
I have installed MD-2.44 on Slackware 10 (perl 5.8.4).
I'm getting this error running:

mimedefang.pl -f mimedefang-filter -test

Scalar found where operator expected at (eval 59) line 284, near ")
$self"
 (Missing operator before $self?)
Failed to run header SpamAssassin tests, skipping some: syntax error at
(eval 59) line 284, near ") $self"

Filter suggested-minimum-filter-for-windows-clients seems syntactically
correct.

Hints?