Error occurred while enabling StatusSign v1.0 (Is it up to date?)
java.lang.ClassCastException: org.bukkit.craftbukkit.v1_8_R3.block.CraftBlockState cannot be cast to org.bukkit.block.Sign
        at be.shark.statussign.StatusSign.<init>(StatusSign.java:21) ~[?:?]
        at be.shark.statussign.StatusSigns.onEnable(StatusSigns.java:43) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:342) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:314) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.reload(CraftServer.java:720) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.Bukkit.reload(Bukkit.java:544) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:620) [spigot.jar:git-Bukkit-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchServerCommand(CraftServer.java:606) [spigot.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.aO(DedicatedServer.java:372) [spigot.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:336) [spigot.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [spigot.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [spigot.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]