help on unknown mailer error 5

[pzee @ coco . ca . rop . edu (Phillip J. Zee (Majordomo maintainer))]

I have installed majordomo 1.92 and tested it.  I got the following error:
echo help | /usr/lib/sendmail -v majordomo
majordomo... aliased to  "|/export/home/sigweb/majordomo/wrapper majordomo"
majordomo: No such file or directory
"|/export/home/sigweb/majordomo/wrapper majordomo"... unknown mailer error 5
pzee... Sent

In the doc, it says the this is caused by:
1. perl script is not executable
   -rwxr-xr-x  1 majordom majordom    42268 Jul 20 09:15 majordomo*

   So, it is executable

2. the location of perl program specified withe the #! line is incorrect

   which perl
/usr/local/bin/perl

   head majordomo
#!/usr/local/bin/perl

   So, not this one either.

3. location of the wrapper looks for perl scripts is not the location where
   the scripts are located.
   Not this one either.

And I executed majordomo at command line:
majordomo
Can't locate ctime.pl in @INC at majordomo line 53.


What's wrong here?

Thanks,

Philip