Undefined subroutine &main::lopen

[sibo @ topo . ucl . ac . be]

I just installed majordomo-1.93 on Sun/OS 4.1.3
I created a list test as described in the readme.

When I enter the command :
 mail -v test-request

I get the  message :

test-request... aliased to  "|/usr/local/etc/majordomo/wrapper request-answer 
test"
"|/usr/local/etc/majordomo/wrapper request-answer test"... Connecting to
  via prog...
Undefined subroutine &main::lopen called at 
/usr/local/etc/majordomo/majordomo.pl line 229, <STDIN> line 1.
"|/usr/local/etc/majordomo/wrapper request-answer test"... Sent

Could someone tell me what i am doing wrong?

Merence Sibomana.