[19:25:56 WARN]: [OnTime] Task #84 for OnTime v4.1.2.e generated an exception
java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:839) ~[?:1.7.0_71]
        at java.util.HashMap$KeyIterator.next(HashMap.java:874) ~[?:1.7.0_71]
        at me.edge209.OnTime.PlayerEventListener.auditLogout(PlayerEventListener.java:696) ~[?:?]
        at me.edge209.OnTime.OnTime.auditLogout(OnTime.java:547) ~[?:?]
        at me.edge209.OnTime.OnTime$7.run(OnTime.java:529) ~[?:?]
        at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:641) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-205-g0a049fa]