Bukkit

What steps will reproduce the problem?
1. Plugin gives Error Message when I start server
2. Fire doesn't spreed infinite
3. Fire doesn't spreed faster

What is the expected output? What do you see instead?
Only errors

What version of the product are you using?
1.3.2 (last)

Do you have an error log of what happened?
[SEVERE] Could not load 'plugins\FieryInferno.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/minecraft/server/Block
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:154)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
    at org.bukkit.craftbukkit.v1_4_6.CraftServer.loadPlugins(CraftServer.java:278)
    at org.bukkit.craftbukkit.v1_4_6.CraftServer.<init>(CraftServer.java:256)
    at net.minecraft.server.v1_4_6.PlayerList.<init>(PlayerList.java:56)
    at net.minecraft.server.v1_4_6.DedicatedPlayerList.<init>(SourceFile:11)
    at net.minecraft.server.v1_4_6.DedicatedServer.init(DedicatedServer.java:106)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:433)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/Block
    at com.github.hawkfalcon.FieryInferno.FieryInferno.<clinit>(FieryInferno.java:26)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:143)
    ... 9 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.Block
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:34)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 13 more

Please provide any additional information below.