sitefinity backend pages not able to publish . it gives &quo

Hello sitefinity ,

I m using sitefinity 7.1.52 version.In backend when m edit the page ,page will open and one popup also comes with this.i attached snapshot of popup below.also publish ,preview buttons are not visible.That's why m unable to publish pages.The error "Undefined" popup occur on each page.Also on blank newly created page .Because of that i cant even create or edit old pages . Please help in this issue.Our client facing these issue while working on backend.We also tried to fix it but yet not possible.

I attached snapshot of error popup and Log file which showing the actual error .

Thanks in Advance.

 LogError:

----------------------------------------
Timestamp: 6/9/2016 6:51:39 AM

Message: HandlingInstanceID: 4a2e53ca-6cfd-47e9-ac32-86b080066d0b
An exception of type 'System.Xaml.XamlObjectWriterException' occurred and was caught.
-------------------------------------------------------------------------------------
06/09/2016 02:51:39
Type : System.Xaml.XamlObjectWriterException, System.Xaml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : Failed to create a 'Settings' from the text 'Assembly references and imported namespaces serialized as XML namespaces'.
Source : System.Xaml
Help link :
LineNumber : 0
LinePosition : 0
Data : System.Collections.ListDictionaryInternal
TargetSite : System.Object Logic_CreateFromValue(MS.Internal.Xaml.Context.ObjectWriterContext, System.Xaml.Schema.XamlValueConverter`1[System.ComponentModel.TypeConverter], System.Object, System.Xaml.XamlMember, System.String, MS.Internal.Xaml.Runtime.IAddLineInfo)
HResult : -2146233088
Stack Trace :    at System.Xaml.XamlObjectWriter.Logic_CreateFromValue(ObjectWriterContext ctx, XamlValueConverter`1 typeConverter, Object value, XamlMember property, String targetName, IAddLineInfo lineInfo)
   at System.Xaml.XamlObjectWriter.Logic_CreatePropertyValueFromValue(ObjectWriterContext ctx)
   at System.Xaml.XamlObjectWriter.WriteEndMember()
   at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
   at System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)
   at System.Xaml.XamlServices.Load(XamlReader xamlReader)
   at System.Xaml.XamlServices.Load(Stream stream)
   at Telerik.Sitefinity.Workflow.WorkflowManager.LoadContentApprovalWorkflow(String workflowServiceVirtualPath)
   at Telerik.Sitefinity.Workflow.WorkflowManager.GetContentServiceFlowchartInspector(Type type)
   at Telerik.Sitefinity.Workflow.WorkflowManager.GetCurrentDecisions(String itemId, Type itemType, String providerName, CultureInfo itemStatusCulture)
   at Telerik.Sitefinity.Workflow.Services.WorkflowService.GetWorkflowVisualElementsInternal(String itemType, String providerName, String itemId, String itemCulture, Boolean showMoreActions)
   at Telerik.Sitefinity.Workflow.Services.WorkflowService.GetWorkflowVisualElements(String itemType, String providerName, String itemId, String itemCulture, Boolean showMoreActions)
   at SyncInvokeGetWorkflowVisualElements(Object , Object[] , Object[] )
   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

Additional Info:

MachineName : H-MYWEALTHTRACE
TimeStamp : 6/9/2016 6:51:39 AM
FullName : Telerik.Sitefinity.Utilities, Version=7.1.5213.0, Culture=neutral, PublicKeyToken=b28c218413bdf563
AppDomainName : /LM/W3SVC/16/ROOT-1-131099286124571965
ThreadIdentity :
WindowsIdentity : H-MYWEALTHTRACE\IWPD_11(dcarey)
Requested URL : test.mywealthtrace.com/.../
    Inner Exception
    ---------------
    Type : System.IO.FileLoadException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
    Message : Could not load file or assembly 'Extreme.Numerics.Net40, Version=4.2.11333.0, Culture=neutral, PublicKeyToken=9e513770f58567b2' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
    Source : mscorlib
    Help link :
    FileName : Extreme.Numerics.Net40, Version=4.2.11333.0, Culture=neutral, PublicKeyToken=9e513770f58567b2
    FusionLog : WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

    Data : System.Collections.ListDictionaryInternal
    TargetSite : Void ResolveType(System.Reflection.RuntimeModule, Int32, IntPtr*, Int32, IntPtr*, Int32, System.Runtime.CompilerServices.ObjectHandleOnStack)
    HResult : -2146234304
    Stack Trace :    at System.ModuleHandle.ResolveType(RuntimeModule module, Int32 typeToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount, ObjectHandleOnStack type)
       at System.ModuleHandle.ResolveTypeHandleInternal(RuntimeModule module, Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
       at System.Reflection.RuntimeModule.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments)
       at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, RuntimeModule decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, IRuntimeMethodInfo& ctor, Boolean& ctorHasParameters, Boolean& isVarArg)
       at System.Reflection.CustomAttribute.IsCustomAttributeDefined(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, RuntimeType attributeFilterType, Int32 attributeCtorToken, Boolean mustBeInheritable)
       at System.Reflection.CustomAttribute.IsDefined(RuntimeAssembly assembly, RuntimeType caType)
       at System.Reflection.RuntimeAssembly.IsDefined(Type attributeType, Boolean inherit)
       at Microsoft.VisualBasic.Activities.XamlIntegration.VisualBasicExpressionConverter.AssemblyCache.EnsureInitialized()
       at Microsoft.VisualBasic.Activities.XamlIntegration.VisualBasicExpressionConverter.WrapCachedMapping(NamespaceDeclaration prefix, ReadOnlyXmlnsMapping& readOnlyMapping)
       at Microsoft.VisualBasic.Activities.XamlIntegration.VisualBasicExpressionConverter.CollectXmlNamespacesAndAssemblies(ITypeDescriptorContext context)
       at Microsoft.VisualBasic.Activities.XamlIntegration.VisualBasicSettingsConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
       at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CreateObjectWithTypeConverter(ServiceProviderContext serviceContext, XamlValueConverter`1 ts, Object value)
       at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CreateFromValue(ServiceProviderContext serviceContext, XamlValueConverter`1 ts, Object value, XamlMember property)
       at System.Xaml.XamlObjectWriter.Logic_CreateFromValue(ObjectWriterContext ctx, XamlValueConverter`1 typeConverter, Object value, XamlMember property, String targetName, IAddLineInfo lineInfo)



Category: ErrorLog

Priority: 0

EventId: 90000

Severity: Error

Title:Enterprise Library Exception Handling

Machine: H-MYWEALTHTRACE

App Domain: /LM/W3SVC/16/ROOT-1-131099286124571965

ProcessId: 4724

Process Name: C:\windows\SysWOW64\inetsrv\w3wp.exe

Thread Name:

Win32 ThreadId:168

Extended Properties:
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Hi Rupali,

Usually this type of issue is caused by missing assembly reference(s). Verify that the project has all the referenced assemblies, project's bin folder can be compared with the bin folder of the _EmptyProject of your current Sitefinity CMS version.

Also verify that the project has reference to the Telerik.Sitefinity.Frontend assembly.

Regards,
Arnob Makhlaqur
Telerik