[10:40:30 WARN]: [VirtualPack] AN ERROR OCCURED! PLEASE SEND THE MESSAGE BELOW TO THE DEVELOPER!
[10:40:30 WARN]: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/Packet
[10:40:30 WARN]: 	at net.drgnome.virtualpack.util.ConfigProxy.setDefs(ConfigProxy.java:131)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.util.ConfigProxy.<init>(ConfigProxy.java:91)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.util.Config.reload(Config.java:26)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.VPlugin.reloadConfig(VPlugin.java:681)
[10:40:30 WARN]: 	at org.bukkit.plugin.java.JavaPlugin.getConfig(JavaPlugin.java:157)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.util.Config.reload(Config.java:26)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.VPlugin.init(VPlugin.java:79)
[10:40:30 WARN]: 	at net.drgnome.virtualpack.thread.VThreadWait.run(VThreadWait.java:17)
[10:40:30 WARN]: 	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71)
[10:40:30 WARN]: 	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:346)
[10:40:30 WARN]: 	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:638)
[10:40:30 WARN]: 	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289)
[10:40:30 WARN]: 	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584)
[10:40:30 WARN]: 	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490)
[10:40:30 WARN]: 	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)
[10:40:30 WARN]: Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.Packet
[10:40:30 WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91)
[10:40:30 WARN]: 	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)
[10:40:30 WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:40:30 WARN]: 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:40:30 WARN]: 	... 15 more