I downloaded MCMMO 1.5.09 and it comes up with the message previously mentioned.
[19:18:24 INFO]: [DirectLeaks] Unable to access the antireleak banlist.
[19:18:24 INFO]: [DirectLeaks] Error code: 0x1
[19:18:24 INFO]: Stopping server
[19:18:24 INFO]: [DirectLeaks] Unable to access the antireleak banlist.
[19:18:24 INFO]: [DirectLeaks] Error code: 0x1
[19:18:24 INFO]: Stopping server