Bukkit

What steps will reproduce the problem?
1.Starting the server
2.Reloading
3.Stoping the server

What is the expected output? What do you see instead?
SignRank enabled?
What version of the product are you using?
1.2.3
Do you have an error log of what happened?
Yes

Please provide any additional information below.

ERROR LOG:

12:23:21 AM [severe]  Error occurred while enabling SignRank v1.2.3 (Is it up to date?)
12:23:21 AM [javastacktrace]     at ru.tehkode.permissions.bukkit.PermissionsEx.getPermissionManager(PermissionsEx.java:194)
12:23:21 AM [javastacktrace]     at me.coolblinger.signrank.SignRank.onEnable(SignRank.java:37)
12:23:21 AM [javastacktrace]     at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
12:23:21 AM [javastacktrace]     at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
12:23:21 AM [javastacktrace]     at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
12:23:21 AM [javastacktrace]     at org.bukkit.craftbukkit.v1_6_R2.CraftServer.loadPlugin(CraftServer.java:282)
12:23:21 AM [javastacktrace]     at org.bukkit.craftbukkit.v1_6_R2.CraftServer.enablePlugins(CraftServer.java:264)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.MinecraftServer.l(MinecraftServer.java:313)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.MinecraftServer.f(MinecraftServer.java:290)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.MinecraftServer.a(MinecraftServer.java:250)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.DedicatedServer.init(DedicatedServer.java:151)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:391)
12:23:21 AM [javastacktrace]     at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)