2012-12-11 03:00:27 [SEVERE] Could not load 'plugins/SmokeTrail.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ClassNotFoundException: me.dimension.smoke.trail
    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.CraftServer.loadPlugins(CraftServer.java:227)
    at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:205)
    at net.minecraft.server.ServerConfigurationManagerAbstract.<init>(ServerConfigurationManagerAbstract.java:51)
    at net.minecraft.server.ServerConfigurationManager.<init>(SourceFile:11)
    at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:111)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:398)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.ClassNotFoundException: me.dimension.smoke.trail
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:44)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    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