Bug - Cannot submit to offline player?

Hi, I have a tiny little bug with a Plugin I made (I noticed while I was making another plugin xD)
Basically, the plugin I was making kicks you if you don't have the right permission.
But because of that, it causes some problems with my other plugin (Which uses the same event - login, to refresh a nametag) but, because it kicks the player first, the nametag refreshing causes some errors.

Code:java

    @EventHandler
    public void login(PlayerLoginEvent event) {
        Player p = event.getPlayer();
        TagAPI.refreshPlayer(p);
    }

Stacktrace:
23:12:29 [SEVERE] Could not pass event PlayerLoginEvent to ezColour v1.0.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at net.minecraft.server.v1_6_R2.PlayerList.attemptLogin(PlayerList.java:334)
at net.minecraft.server.v1_6_R2.PendingConnection.e(PendingConnection.java:120)
at net.minecraft.server.v1_6_R2.PendingConnection.d(PendingConnection.java:43)
at net.minecraft.server.v1_6_R2.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41)
at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:29)
at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:590)
at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: org.kitteh.tag.api.TagAPIException: Can't submit offline player!
at org.kitteh.tag.TagAPI.refreshPlayer(TagAPI.java:117)
at com.gmail.bloodless2010.ezcolour.ezColour.login(ezColour.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
... 13 more

Is there a way of stopping this from happening ? I tried adding a check to see if the player was offline before running but it didn't work at all.
Here's what I added;
if (p == null){
getLogger().info("Tried to change nametag of a user but failed as they are offline");
} else {
//rest of code here - they are online
}

Any ideas? Any help is appreciated!

 

What are the two plugins supposed to do? Without knowing, I can't help too much, but I can suggest you set the even priority to HIGHEST.

 

Add to the method you pasted to @EventHandler this: (priority=MONITOR,ignoreCancelled=true)

if that does not help, try to delay the refresh 1 tick.