./q create internal server error

2013-01-20 10:51:41 [INFO] xbaxdark issued server command: /q create StoneHammer delivery.
2013-01-20 10:51:41 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'q' in plugin Quester v0.6.3
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
at org.bukkit.craftbukkit.v1_4_6.CraftServer.dispatchCommand(CraftServer.java:514)
at net.minecraft.server.v1_4_6.PlayerConnection.handleCommand(PlayerConnection.java:979)
at net.minecraft.server.v1_4_6.PlayerConnection.chat(PlayerConnection.java:897)
at net.minecraft.server.v1_4_6.PlayerConnection.a(PlayerConnection.java:852)
at net.minecraft.server.v1_4_6.Packet3Chat.handle(Packet3Chat.java:44)
at net.minecraft.server.v1_4_6.NetworkManager.b(NetworkManager.java:290)
at net.minecraft.server.v1_4_6.PlayerConnection.d(PlayerConnection.java:112)
at net.minecraft.server.v1_4_6.ServerConnection.b(SourceFile:39)
at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:30)
at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:598)
at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.IllegalArgumentException: Cannot create section at empty path
at org.apache.commons.lang.Validate.notEmpty(Validate.java:363)
at org.bukkit.configuration.MemorySection.createSection(MemorySection.java:230)
at org.bukkit.configuration.MemorySection.createSection(MemorySection.java:257)
at com.gmail.molnardad.quester.config.QuestConfig.saveConfig(QuestConfig.java:17)
at com.gmail.molnardad.quester.QuestData.saveQuests(QuestData.java:189)
at com.gmail.molnardad.quester.QuestManager.createQuest(QuestManager.java:281)
at com.gmail.molnardad.quester.QuesterCommandExecutor.onCommand(QuesterCommandExecutor.java:207)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
... 15 more
2013-01-20 10:51:42 [INFO] sharpshooter992 issued server command: /home
2013-01-20 10:51:48 [INFO] **RED GIRLS
2013-01-20 10:51:54 [INFO] [ecoCreature] Speedybird123: You are awarded $1.66 for slaying a Slime.
2013-01-20 10:51:58 [INFO] RED i love this song
2013-01-20 10:52:01 [INFO] **RED I LIKE THE WAY THAT THEY WALK