Bukkit

What steps will reproduce the problem?
1. Install plugin
2. Edit controller_config.yml
3. Start server

What is the expected output? What do you see instead?
There is an error message in the server.log file.

What version of the product are you using?
0.9.4.9

Do you have an error log of what happened?
2013-06-12 16:28:54 [INFO] [BackFromTheDead] There was an error parsing the configuration
2013-06-12 16:28:54 [SEVERE] java.lang.NumberFormatException: empty String
2013-06-12 16:28:54 [SEVERE]     at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1011)
2013-06-12 16:28:54 [SEVERE]     at java.lang.Double.parseDouble(Double.java:540)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.parseItemStackList(Core.java:827)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.loadDropTables(Core.java:785)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.loadValues(Core.java:564)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.setupConfig(Core.java:383)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.doEnable(Core.java:233)
2013-06-12 16:28:54 [SEVERE]     at me.apollo.backfromthedead.backfromthedeadcore.Core.onEnable(Core.java:220)
2013-06-12 16:28:54 [SEVERE]     at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
2013-06-12 16:28:54 [SEVERE]     at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
2013-06-12 16:28:54 [SEVERE]     at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
2013-06-12 16:28:54 [SEVERE]     at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
2013-06-12 16:28:54 [SEVERE]     at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.MinecraftServer.j(MinecraftServer.java:304)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.MinecraftServer.e(MinecraftServer.java:283)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.MinecraftServer.a(MinecraftServer.java:243)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:151)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
2013-06-12 16:28:54 [SEVERE]     at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)

Please provide any additional information below.
I am not sure if this error prohibits the plugin from working or not.