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Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$Ha­erator.nextEntry(Unknown Source)
at java.util.HashMap$ValueIterator.next(Unknown Source)
at ic2.common.AudioManagerClient.onTick(AudioManagerClient.java:104)
at ic2.common.IC2.tickStart(IC2.java:1374)
at cpw.mods.fml.common.SingleIntervalHandler.tickStart(SingleIntervalHandler.java:16)
at cpw.mods.fml.common.FMLCommonHandler.tickStart(FMLCommonHandler.java:116)
at cpw.mods.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:292)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:652)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:590)
at bcb.q(IntegratedServer.java:110)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fp.run(SourceFile:818)

AudioManager is for some reason not being ticked anymore inside of IC2.

as for me i used someone explanation to fix it put it Inside of the 'IC2' class in the tickStart() method.

Platform.profilerEndStartSection("AudioManager");

AudioManager.onTick();

put that inside of tickStart() between EnergyNet.onTick(world) and platform.profilerEndStartSection("Networking");


Please don't post any other topic regarding this issue i already explain what is happening