I tried installing cpanel on a comp with freebsd 4.6 and when i goto <site>:2086 and log in i get this error:

Content-type: text/plain Undefined subroutine &main::selfdef called at whostmgr/bin/whostmgr.pl line 4895.

no idea whats wrong....

Thanks in advance,
Aaron

Have you tried the cpanel support forums or contacting your cpanel provider? Hopefully there is some info there.