Bukkit

Hello I've got a problem with ClearLag v2.8.3
I don't say where is the problem.
Can you help me?

[02:08:35] [Server thread/WARN]: [ClearLag] Task #22 for ClearLag v2.8.3 generated an exception
java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
    at me.minebuilders.clearlag.Util.broadcast(Util.java:42) ~[ClearLag.jar:?]
    at me.minebuilders.clearlag.tasks.ClearTask.run(ClearTask.java:40) ~[ClearLag.jar:?]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53) ~[craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
    at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit-1.7.2.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]

You're using an extremely outdated build of craftbukkit. I'll have to look into adding compatibility for earlier builds.

I can't put a date on the next release, but it SHOULD be within 2-4 weeks from now. If you could directly link me to your craftbukkit jar it'd help a lot .

Edit: Actually it SHOULD be compatible. Give v2.8.4 a go.