An update on this...
The one place I did not zone a player via quest, and just used normal zone lines it happened again today. I will replace those with quest npc's too. But this was in the log. I wanted to just give some more information on it, in case someone else runs into this.
Code:
[07-14-2015 :: 15:58:18] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 15:58:38] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 15:58:58] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 15:59:17] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 15:59:40] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:00:02] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:00:25] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:00:47] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:01:09] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:01:32] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.
[07-14-2015 :: 16:01:54] Zoning Anonymous: Invalid unsolicited zone request to zone id '5'.