Bukkit

What version of DynamicEconomy are you using?:

Try to explain how to arrive at the problem:
1)We don´t know what action make this error. But it comes often, sometime 10 time in one Minute.
The Plugin works, we can use Dynsigns and shops without any trouble.
But this error occurs constantly.
2)
3)

Please paste the error log, if any. (Also provide DynamicEconomy log)
2012-07-30 22:55:47 [SEVERE] Could not pass event PlayerInteractEvent to DynamicEconomy
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:304)
    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 org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:177)
    at org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:147)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:595)
    at net.minecraft.server.Packet15Place.handle(SourceFile:39)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:102)
    at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:82)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:559)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:451)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException
    at me.ksafin.DynamicEconomy.DynamicShop.isShop(DynamicShop.java:104)
    at me.ksafin.DynamicEconomy.DynamicEconomyPlayerListener.onPlayerInteract(DynamicEconomyPlayerListener.java:141)
    at sun.reflect.GeneratedMethodAccessor87.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)
    ... 13 more

Please add a screenshot or video, this is also very helpful.

Sorry i´ve forget to post the Version: v.9.2