[sudo-users] Sudo: parse error in /etc/sudoers near line -1

[Todd C. Miller]

Was your existing sudo 1.6.9p15 installed via installp or rpm?  I
believe sudo 1.6.9p15 was distributed as part of the AIX toolbox
in rpm form.  If so, you may just want to install the new sudo
.rpm package instead of the .bff one.

 - todd