It's the same message, I believe: there are no incoming redirects and both copies say "Evil89". JobQueue issues again?
PLEASE NOTE: this bug hits randomly, and it's unassigned.
Consider appending a preemptive apology to your MassMessage if you really need to use the tool. Having short target lists may also help (if anything, removing any duplicates later will be easier/faster as there should be fewer of them). You can use GUC to figure out if the bug has affected your latest delivery.