Updating List View Web Part property in page

I have a List View web part (In the page > Add web part > App > document library name). I need to update the TitleUrl property of this web part through C# code.

The SaveChanges() method below works for my visual web parts, but not for the List view webpart. I get an error saying: Exception has been thrown by the target of an invocation

webpartManager = myPage.GetLimitedWebPartManager(System.Web.UI.WebControls.WebParts.PersonalizationScope.Shared);
webPart.TitleUrl = titleURL;
webpartManager.SaveChanges(webPart);

I did a casting as below

XsltListViewWebPart listViewWebPart = (XsltListViewWebPart)webPart;
listViewWebPart.TitleUrl = titleURL;
webpartManager.SaveChanges(listViewWebPart);

But I get the error at SaveChanges() method.

An exception of type 'System.Reflection.TargetInvocationException' occurred in Microsoft.SharePoint.dll but was not handled in user code

The error description is as below

>    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[]
> arguments, Signature sig, Boolean constructor)    at
> System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,
> Object[] parameters, Object[] arguments)    at
> System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
> invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)  
> at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[]
> index)    at
> Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.DoesPersonalizedPropertValueMatchDefaultValue(SPPersonalizablePropertyEntry
> spPersonalizablePropertyEntry, Object value, Control defaultControl)  
> at
> Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Serialize(PersonalizationScope
> scope, BinaryWebPartSerializerFlag binaryWebPartSerializerFlags,
> BinaryWebPartSerializerWriter writer)    at
> Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Serialize(SerializationMode
> mode, BinaryWebPartSerializerFlag binaryWebPartSerializerFlags,
> SPSerializationBinderBase serializationBinder,
> BinaryWebPartSerializerWriter writer)    at
> Microsoft.SharePoint.WebPartPages.BinaryWebPartSerializer.Serialize(SerializationMode
> mode, BinaryWebPartSerializerFlag binaryWebPartSerializerFlags,
> SPSerializationBinderBase serializationBinder)    at
> Microsoft.SharePoint.WebPartPages.SPWebPartManager.SaveChangesCore(SPLayoutProperties
> layoutProperties, Boolean httpGet, Boolean saveCompressed, Boolean
> skipRightsCheck, Boolean skipSafeAgainstScriptCheck, WebPartTypeInfo&
> newTypeId, Byte[]& newAllUsersProperties, Byte[]&
> newPerUserProperties, String[]& newLinks)    at
> Microsoft.SharePoint.WebPartPages.SPWebPartManager.SaveChangesInternal(SPLayoutProperties
> layoutProperties, Boolean skipRightsCheck, Boolean
> skipSafeAgainstScriptCheck)    at
> Microsoft.SharePoint.WebPartPages.SPWebPartManager.SaveChanges(Guid
> storageKey)    at
> Microsoft.SharePoint.WebPartPages.SPLimitedWebPartManager.SaveChanges(WebPart
> webPart)    at
> WSP.ABC.ABC.ABCWindow.<>c__DisplayClass5.<ChangeWebPartProperties>b__4()
> at
> Microsoft.SharePoint.SPSecurity.<>c__DisplayClass5.<RunWithElevatedPrivileges>b__3()
> at
> Microsoft.SharePoint.Utilities.SecurityContext.RunAsProcess(CodeToRunElevated
> secureCode)

any reason why ?