title: how to handle System.Windows.Forms.Axhost+InvalidActiveXState exception
body: <p>I am developing a program that should read realplayer file duration and then set it to a timer.Interval , how ever when I debug program there is no errors, but when attemping to get length of file, I get this error : <code>System.Windows.Forms.Axhost+InvalidActiveXState exception</code>. I am using an assembly called AxRealAudioObjects.dll, its version is 2.0. I remember it worked very well on .NET 2.0 but since the current version of .NET is 4.0 it gives this error. Is the dll damaged or is it something else?</p>