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POProblem with conversion of existing project to Silverlight 4
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  1. POProblem with conversion of existing project to Silverlight 4
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    copied!<p>We have a working Silverlight 3 project. After changing the target framework to Silverlight 4 the application won't start anymore. It throws an exception in the following line in the generated InitializeComponent() method:</p> <pre><code>System.Windows.Application.LoadComponent(this, new System.Uri("/SLAppMain;component/App.xaml", System.UriKind.Relative)); </code></pre> <p>Here is the exception (note the inner exception):</p> <pre><code>System.Windows.Markup.XamlParseException occurred Message= [Line: 0 Position: 0] LineNumber=0 LinePosition=0 StackTrace: bei System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) InnerException: System.TypeLoadException Message=Der Typ 'System.Security.AllowPartiallyTrustedCallersAttribute' konnte nicht aus der mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e -Assembly geladen werden. StackTrace: bei System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type) bei System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) bei System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments) bei System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly&amp; lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType&amp; attributeType, IRuntimeMethodInfo&amp; ctor, Boolean&amp; ctorHasParameters, Boolean&amp; isVarArg) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean isDecoratedTargetSecurityTransparent) bei System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) bei System.Reflection.RuntimeAssembly.GetCustomAttributes(Type attributeType, Boolean inherit) bei System.Attribute.GetCustomAttributes(Assembly element, Type attributeType, Boolean inherit) bei MS.Internal.XamlSchemaContext.ProcessXmlnsDefinitions(Assembly assembly, String assemblyName) bei MS.Internal.XamlSchemaContext.EnsureManagedAssemblyAttributesLoaded() InnerException: </code></pre> <p>The problem is that the type System.Security.AllowPartiallyTrustedCallersAttribute is not contained in the Silverlight version of mscorlib.dll. </p> <p>I have no idea how to fix this nor where to look for causes. Has anyone encountered this problem? What could possibly cause this error? </p>
 

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