McPc Plus 1.7.2 Server Stürzt ab

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 17.06.15 14:15
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.elementData(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at net.minecraft.server.management.ServerConfiguratio nManager.func_72374_b(ServerConfigurationManager.j ava:1230)
at net.minecraft.server.MinecraftServer.func_71190_q( MinecraftServer.java:970)
at net.minecraft.server.dedicated.DedicatedServer.fun c_71190_q(DedicatedServer.java:416)
at net.minecraft.server.MinecraftServer.func_71217_p( MinecraftServer.java:796)
at net.minecraft.server.MinecraftServer.run(Minecraft Server.java:660)
at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_80-ea, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 89384080 bytes (85 MB) / 296452096 bytes (282 MB) up to 8520204288 bytes (8125 MB)
JVM Flags: 2 total; -Xincgc -Xmx8G
AABB Pool Size: 8219 (460264 bytes; 0 MB) allocated, 2369 (132664 bytes; 0 MB) used
IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
FML: MCP v9.01-pre FML v7.2.48.2 Minecraft Forge 10.12.0.1022 3 mods loaded, 3 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.48.2} [Forge Mod Loader] (craftbukkit.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.0.1022} [Minecraft Forge] (craftbukkit.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 263 (14728 bytes; 0 MB) allocated, 126 (7056 bytes; 0 MB) used
Player Count: 2 / 20; [EntityPlayerMP['Steffi'/2963, l='world', x=256,50, y=67,00, z=237,50](Steffi at 256.5,67.0,237.5), EntityPlayerMP['High'/3206, l='world', x=254,50, y=67,00, z=225,50](High at 254.5,67.0,225.5)]
Is Modded: Definitely; Server brand changed to 'mcpc,craftbukkit,fml,forge'
Type: Dedicated Server (map_server.txt)