The "ValidateXaml" task failed unexpectedly error

2 posts, 1 answers
  1. Alex Wu
    Alex Wu avatar
    31 posts
    Member since:
    Dec 2009

    Posted 16 Dec 2009 Link to this post

    I created an empty silverlight application, run it and works. But after adding a reference to Telerik.Windows.Controls I get compiler error below. I did not do any coding nor add any controls to the project.I have already tried uninstalling all silverlight related softwares and reinstall Telerik.

    Error    1    The "ValidateXaml" task failed unexpectedly.
    System.IO.FileNotFoundException: Could not load file or assembly 'System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specified.
    File name: 'System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'
       at System.ModuleHandle.ResolveType(Int32 typeToken, RuntimeTypeHandle* typeInstArgs, Int32 typeInstCount, RuntimeTypeHandle* methodInstArgs, Int32 methodInstCount)
       at System.ModuleHandle.ResolveTypeHandle(Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
       at System.Reflection.Module.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
       at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, Module decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, RuntimeMethodHandle& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
       at System.Reflection.CustomAttribute.GetCustomAttributes(Module decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes)
       at System.Reflection.CustomAttribute.GetCustomAttributes(Assembly assembly, RuntimeType caType)
       at System.Reflection.Assembly.GetCustomAttributes(Type attributeType, Boolean inherit)
       at System.Attribute.GetCustomAttributes(Assembly element, Type attributeType, Boolean inherit)
       at MS.Internal.Xaml.MS.Impl.XamlSystemBinding.AddPairsFromAssembly(XamlSchemaContext schemaContext, Assembly asm, String uri, List`1 pairs)
       at MS.Internal.Xaml.MS.Impl.XamlSystemBinding.SearchForXamlNamespace(XamlSchemaContext schemaContext, String uriString, IEnumerable`1 referenceAssemblies)
       at MS.Internal.Xaml.XamlSchemaContext.GetXamlNamespace(String xmlns, Assembly localAssembly)
       at MS.Internal.Xaml.XamlSchemaContext.GetXamlNamespace(String xmlns)
       at MS.MarkupCompiler.ValidationPass.ValidateXaml(String fileName, Assembly[] assemblies, Assembly callingAssembly, TaskLoggingHelper log, Boolean shouldThrow)
       at Microsoft.Silverlight.Build.Tasks.ValidateXaml.XamlValidator.Execute(ITask task)
       at Microsoft.Silverlight.Build.Tasks.ValidateXaml.XamlValidator.Execute(ITask task)
       at Microsoft.Silverlight.Build.Tasks.ValidateXaml.Execute()
       at Microsoft.Build.BuildEngine.TaskEngine.ExecuteInstantiatedTask(EngineProxy engineProxy, ItemBucket bucket, TaskExecutionMode howToExecuteTask, ITask task, Boolean& taskResult)


  2. Answer
    Vlad
    Admin
    Vlad avatar
    11100 posts

    Posted 17 Dec 2009 Link to this post

    Hi Alex Wu,

     If this is Silverlight 4 you may need to try our Silverlight 4 assemblies.


    Regards,
    Vlad
    the Telerik team

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