Thread related problem?

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C#

WPF

C#4.0

Hi All!

I got weird problem which might be threading related. I got 3. party
component which feeds my singleton dataclass properties. My dataclass offers public propeties and some public methods to send messages into 3. party component. In the end I use instance of my dataclass in multiple windows as showing those properties or sending messages to component.

Problem comes when quit my program and dispose my dataclass. At the disposing I have to call 3. party component to stop its thread channel.Stopthread(). which
SOMETIMES throws indexoutof range exception. But when I but messagebox.show("just
click ok") just before channel.Stopthread that error never happens (what is that trick!?).

I did also simple wpf app where I use directly 3. party component and I was able to spam channel.StartThread / channel.StopThread as long I wanted without errors..

Also odd thing is that when I but channel.Stopthread inside try/catch
statement it never catches that error.

UPDATE: Here is some code at uninitialize

private void Uninitialize()
{
.
.
//UnSubcribe from message events which feeds my properties
channel.MessageReceived -= new EventHandler<MessageEventArgs>(MessageReceived);
channel.stopthread();
.
.
}

Where..

public void StopThread()
{
if (this.thread != null)
   {
   this.threadStop = true;
   this.SetEvent(-1);
   this.thread.Join();
   }
}

Where..

internal void SetEvent(params Object[] args)
       {
           lock (this.events)
           {
               this.events.Enqueue(args);
           }
       }

And that is pretty much I'm able dig in about 3. party component. As you might noticed this is empedded device related application and I cannot debug this on development computer. My tracelog tells that programs crashes at channel.StopThread call.

I know that this is trivial to you also but any advice is would be great because im totally novice what comes to threading.

Hope to hear your thougths :)

Cheers!