We removed the ability to manage pledges without turning existing pledges off first. We should probably do that. Please email me (do not post in this bug) a list of affected user emails and I will email them explaining the situation.
Did you turn off their pledge drives?
(In reply to comment #2) > Did you turn off their pledge drives? As far as I know, pledge drives do not exist in any code on the site. If that is not true let me know.