2013-02-20 18:40:29 [INFO] COLLECTING RENT.
 2013-02-20 18:40:29 [WARNING] [MineEstate] Task #19448 for MineEstate v1.0 generated an exception
 java.lang.NullPointerException
 at org.nach0z.mineestate.RentCollector.run(RentCollector.java:39)
 at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftTask.run(CraftTask.java:53)
 at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:344)
 at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:530)
 at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224)
 at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
 at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
 at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)