java.lang.reflect.InvocationTargetException

2012-12-13 07:33:47 [SEVERE] java.lang.reflect.InvocationTargetException
2012-12-13 07:33:47 [SEVERE]    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2012-12-13 07:33:47 [SEVERE]    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
2012-12-13 07:33:47 [SEVERE]    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
2012-12-13 07:33:47 [SEVERE]    at java.lang.reflect.Constructor.newInstance(Unknown Source)
2012-12-13 07:33:47 [SEVERE]    at net.dtl.citizens.trader.objects.StockItem.createItem(StockItem.java:259)
2012-12-13 07:33:47 [SEVERE]    at net.dtl.citizens.trader.traits.InventoryTrait.load(InventoryTrait.java:97)
2012-12-13 07:33:47 [SEVERE]    at net.dtl.citizens.trader.TraderCharacterTrait.load(TraderCharacterTrait.java:73)
2012-12-13 07:33:47 [SEVERE]    at net.citizensnpcs.npc.CitizensNPC.loadTrait(CitizensNPC.java:137)
2012-12-13 07:33:47 [SEVERE]    at net.citizensnpcs.npc.CitizensNPC.load(CitizensNPC.java:124)
2012-12-13 07:33:47 [SEVERE]    at net.citizensnpcs.NPCDataStore.loadInto(NPCDataStore.java:44)
2012-12-13 07:33:47 [SEVERE]    at net.citizensnpcs.Citizens$1.run(Citizens.java:232)
2012-12-13 07:33:47 [SEVERE]    at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:53)
2012-12-13 07:33:47 [SEVERE]    at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
2012-12-13 07:33:47 [SEVERE]    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:529)
2012-12-13 07:33:47 [SEVERE]    at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
2012-12-13 07:33:47 [SEVERE]    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
2012-12-13 07:33:47 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
2012-12-13 07:33:47 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
2012-12-13 07:33:47 [SEVERE] Caused by: java.lang.NumberFormatException: For input string: "0,02"
2012-12-13 07:33:47 [SEVERE]    at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
2012-12-13 07:33:47 [SEVERE]    at java.lang.Double.parseDouble(Unknown Source)
2012-12-13 07:33:47 [SEVERE]    at net.dtl.citizens.trader.objects.StockItem.<init>(StockItem.java:47)
2012-12-13 07:33:47 [SEVERE]    ... 18 more
2012-12-13 07:33:47 [WARNING] [Citizens] Task #15155 for Citizens v2.0.4-SNAPSHOT (build 597) generated an exception
java.lang.NullPointerException
    at net.dtl.citizens.trader.traits.InventoryTrait.load(InventoryTrait.java:98)
    at net.dtl.citizens.trader.TraderCharacterTrait.load(TraderCharacterTrait.java:73)
    at net.citizensnpcs.npc.CitizensNPC.loadTrait(CitizensNPC.java:137)
    at net.citizensnpcs.npc.CitizensNPC.load(CitizensNPC.java:124)
    at net.citizensnpcs.NPCDataStore.loadInto(NPCDataStore.java:44)
    at net.citizensnpcs.Citizens$1.run(Citizens.java:232)
    at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:53)
    at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:529)
    at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)