For Ultimate Survival Games plugin - Error

> [23:21:30 WARN]: [SurvivalGames] Task #1256 for SurvivalGames vBeta 1.9.2 generated an exception
java.lang.IllegalStateException: Cannot set scoreboard for invalid CraftPlayer
     at org.bukkit.craftbukkit.v1_7_R1.entity.CraftPlayer.setScoreboard(CraftPlayer.java:1187) ~[minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at me.maker56.survivalgames.game.Game.updateScoreboard(Game.java:592) ~[?:?]
     at me.maker56.survivalgames.game.Game.updateScoreboard(Game.java:586) ~[?:?]
     at me.maker56.survivalgames.game.phases.IngamePhase$3.run(IngamePhase.java:116) ~[?:?]
     at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53) ~[minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
     at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]