I finally figured out why few of the Monitor Duty authors were posting.  They’ve almost all been locked out ever since I installed Sabre in order to fight the spam registrations.  I fixed that tonight.  Any and all registered users have now been okayed to author posts or comment.

My apologies to any and all who have been hitting this “Invalid registration status” block, and a hearty “welcome back” to all of the MD authors who were locked out.