Fatal Error - Unhandled Exception

[Webberjo]

Attempting to initialize this plugin sometimes causes the following fatal error to crash ACT:

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Fatal Error - Unhandled Exception
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An unhandled exception has occurred.  ACT may close.
Press Ctrl-C to copy this MessageBox.

System.Reflection.TargetInvocationException - Exception has been thrown by the target of an invocation.
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

   at FFXIV_ACT_Plugin.Memory.DataSubscription.DelegateCallback(IAsyncResult ar)

   at System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(IMessage msg)

   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)

   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()

   at System.Threading.ThreadPoolWorkQueue.Dispatch()

System.RuntimeMethodHandle, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
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OK   
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I'm currently using FFXIV_ACT_Plugin v2.0.4.2

[agate-pris]

I've get same error.

[Krude]

I get the same error, and it crashes my ACT in the process, but it's not on loading, but randomly when checking MB prices.

[What871As]

FFXIV_ACT_Plugin v2.0.4.2