Bukkit

I keep getting this even though I have the map as a backup in the back up folder of World reset, fix this, my server wont even start

java.io.FileNotFoundException: backup/world (No such file or directory) 16:54:24 [SEVERE] at java.io.FileInputStream.open(Native Method) 16:54:24 [SEVERE] at java.io.FileInputStream.<init>(FileInputStream.java:146) 16:54:24 [SEVERE] at me.timt.smi.TIMT.copydir(TIMT.java:85) 16:54:24 [SEVERE] at me.timt.smi.TIMT.onEnable(TIMT.java:43) 16:54:24 [SEVERE] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217) 16:54:24 [SEVERE] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457) 16:54:24 [SEVERE] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381) 16:54:24 [SEVERE] at org.bukkit.craftbukkit.v1_6_R3.CraftServer.loadPlugin(CraftServer.java:284) 16:54:24 [SEVERE] at org.bukkit.craftbukkit.v1_6_R3.CraftServer.enablePlugins(CraftServer.java:266) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.MinecraftServer.l(MinecraftServer.java:315) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.MinecraftServer.f(MinecraftServer.java:292) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.MinecraftServer.a(MinecraftServer.java:252) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.DedicatedServer.init(DedicatedServer.java:152) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:393) 16:54:24 [SEVERE] at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)