I have problems with my solutions after uninstalling VS 2012 RC.All my previous project that has Entity Framework in their class library always show the error below anytime I try to build:\[code\]Error 4 The "EntityDeploy" task failed unexpectedly.System.TypeLoadException: Could not load type 'System.Reflection.AssemblySignatureKeyAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. at System.ModuleHandle.ResolveMethod(RuntimeModule module, Int32 methodToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount) at System.ModuleHandle.ResolveMethodHandleInternalCore(RuntimeModule module, Int32 methodToken, IntPtr[] typeInstantiationContext, Int32 typeInstCount, IntPtr[] methodInstantiationContext, Int32 methodInstCount) at System.ModuleHandle.ResolveMethodHandleInternal(RuntimeModule module, Int32 methodToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) at System.Reflection.CustomAttributeData..ctor(RuntimeModule scope, CustomAttributeRecord caRecord) at System.Reflection.CustomAttributeData.GetCustomAttributes(RuntimeModule module, Int32 tkTarget) at System.Reflection.CustomAttributeData.GetCustomAttributesInternal(RuntimeAssembly target) at System.Reflection.RuntimeAssembly.GetCustomAttributesData() at System.Reflection.CustomAttributeData.GetCustomAttributes(Assembly target) at System.Resources.ManifestBasedResourceGroveler.GetNeutralResourcesLanguage(Assembly a, UltimateResourceFallbackLocation& fallbackLocation) at System.Resources.ResourceManager.CommonSatelliteAssemblyInit() at System.Resources.ResourceManager..ctor(String baseName, Assembly assembly) at Microsoft.Data.Entity.Build.Tasks.BuildTasksResources.get_ResourceManager() at Microsoft.Data.Entity.Build.Tasks.BuildTasksResources.get_ProcessingEdmxFiles() at Microsoft.Data.Entity.Build.Tasks.EntityDeploy.OutputFiles(DirectoryInfo topLevelOutputDir) at Microsoft.Data.Entity.Build.Tasks.EntityDeploy.Execute() at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask, Boolean& taskResult)DataAccessLayer\[/code\]But funny enough if I put the .edmx file in the App_Code in the root directory of my website there wont be any errors.Please HELP.