Bukkit

What is the issue?
-When i set this plugin with multiverse and die i respawn in my main world and it says that the home bed is obstructed

Please provide any additional information below.

-Im also using uskyblock, superspleef, worldpos, vault, worldeditand simplegui

also when i die this appears on the server console

20:16:00 [WARNING] [DeathSwap] Task #30 for DeathSwap v1.5 generated an exceptio
n
java.lang.NullPointerException
        at com.hawkfalcon.deathswap.utilities.Utility.restorePlayer(Utility.java
:129)
        at com.hawkfalcon.deathswap.DSListener$1.run(DSListener.java:118)
        at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftTask.run(CraftTask.java
:53)
        at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:345)
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:5
22)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:2
26)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:4
86)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java
:419)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:5
82)

Thanks for your time