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POInvalidCastException for two Objects of the same type
 

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    <p>I have this weird problem that I cannot handle myself. A class in the model of my mvp-project designed as singleton causes an InvalidCastException. The source of error is found in this code line where the deserialised object is assigned to the instance variable of the class: <code>engineObject = (ENGINE)xSerializer.Deserialize(str);</code> It occurs whenever I try to add one of my UserControls to a Form or to a different UC. All of my UCs have a special presenter that access the above mentioned instance variable of the singleton class. This is what I get when trying to add a UC somewhere:</p> <p>'System.TypeInitializationException: The type initializer for 'MVP.Model.EngineData' threw an exception. ----> System.InvalidCastException: [A]Engine cannot be cast to [B]Engine. Type A originates from 'MVP.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'LoadNeither' at location '[...]\AppData\Roaming\Microsoft\VisualStudio\9.0\ProjectAssemblies\uankw1hh01\MVP.Model.dll'. Type B originates from 'MVP.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'LoadNeither' at location '[...]\AppData\Roaming\Microsoft\VisualStudio\9.0\ProjectAssemblies\u_hge2de01\MVP.Model.dll'...</p> <p>So I somehow have two assemblies and they are not accessed from my project folder, but from a VS temp folder? I googled a lot and only found this: <a href="http://www.darrellhawley.com/2009/02/ironpython-exception-aperson-cannot-be.html" rel="noreferrer">IronPython Exception: [A]Person cannot be cast to [B]Person</a>. There is a solution offered, but first it concerns IronPhyton and second I don't know where to use it within my project? </p> <p>It would be just great, if u could help me out here :-) thx</p>
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