Axacropdf acrobat reader COM component in windowsform C#

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COM

ActiveX

forms

C#6.0

Hi,
i'm using the "Acrobat Reader" COM-Component in a Form, for displaying PDF-Components.
When the Form is closed, an Access Violation Exception is thrown.

// Auto generated Code in Form.Designer.cs

/// <summary>
     /// Clean up any resources being used.
     /// </summary>
     /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
     protected override void Dispose(bool disposing)
     {
         if (disposing && (components != null))
         {
             components.Dispose();
         }
         base.Dispose(disposing); // here the Exception is thrown
     }

What I have tried:

I Tried:

1. Removing the Component from the this.components Collection of the Form.// Same Result
2. Loading an not existing Document, to clear the Component. // Same Result
3. Marshal.ReleaseComObject(axAcroPDF1); // Exception Not a COM-Object