Saving page in SharePoint Designer gives JavaScript error

When you try to save document in SharePoint designer - the JavaScript error started raising.

I found that it occurred after a cumulative update SharePoint 2010 - KB2597132.

The solution to fixed it was -

1.Copying files:

FORM.JS
INIT.JS
CORE.JS
BFORM.JS
OWS.JS

from an environment where it works to : "../LAYOUTS/1033".

2.Reset the IE settings

Method not found: 'System.String System.ServiceModel.Activation.Iis7Helper.ExtendedProtectionDotlessSpnNotEnabledThrowHelper(System.Object)'.

After installing Microsoft patch MS13-04[KB 2756920](Security Update for Microsoft .NET Framework 3.5.1 on Windows 7 and Windows Server 2008 R2 - A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.), our SharePoint Portal was down with the error :
 WebHost failed to process a request. 
 Sender Information: System.ServiceModel.ServiceHostingEnvironment+HostingManager/17653682 Exception: System.ServiceModel.ServiceActivationException: The service '/SecurityTokenServiceApplication/securitytoken.svc' cannot be activated due to an exception during compilation. The exception message is: Method not found: 'System.String System.ServiceModel.Activation.Iis7Helper.ExtendedProtectionDotlessSpnNotEnabledThrowHelper(System.Object)'.. ---> System.MissingMethodException: Method not found: 'System.String System.ServiceModel.Activation.Iis7Helper.ExtendedProtectionDotlessSpnNotEnabledThrowHelper(System.Object)'. at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.WebConfigurationManagerWrapper.BuildExtendedProtectionPolicy(ExtendedProtectionTokenChecking tokenChecking, ExtendedProtectionFlags flags, List`1 spnList) at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.WebConfigurationManagerWrapper.GetExtendedProtectionPolicy(ConfigurationElement element) at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.ProcessWindowsAuthentication(String siteName, String virtualPath, HostedServiceTransportSettings& transportSettings) at System.ServiceModel.WasHosting.MetabaseSettingsIis7V2.CreateTransportSettings(String relativeVirtualPath) at System.ServiceModel.Activation.MetabaseSettingsIis.GetTransportSettings(String virtualPath) at System.ServiceModel.Activation.MetabaseSettingsIis.GetAuthenticationSchemes(String virtualPath) at System.ServiceModel.Channels.HttpChannelListener.ApplyHostedContext(VirtualPathExtension virtualPathExtension, Boolean isMetadataListener) at System.ServiceModel.Channels.HttpTransportBindingElement.BuildChannelListener[TChannel](BindingContext context) at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]() at System.ServiceModel.Channels.MessageEncodingBindingElement.InternalBuildChannelListener[TChannel](BindingContext context) at System.ServiceModel.Channels.BinaryMessageEncodingBindingElement.BuildChannelListener[TChannel](BindingContext context) at System.ServiceModel.Channels.BindingContext.BuildInnerChannelListener[TChannel]() at System.ServiceModel.Channels.Binding.BuildChannelListener[TChannel](Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, BindingParameterCollection parameters) at System.ServiceModel.Description.DispatcherBuilder.MaybeCreateListener(Boolean actuallyCreate, Type[] supportedChannels, Binding binding, BindingParameterCollection parameters, Uri listenUriBaseAddress, String listenUriRelativeAddress, ListenUriMode listenUriMode, ServiceThrottle throttle, IChannelListener& result, Boolean supportContextSession) at System.ServiceModel.Description.DispatcherBuilder.BuildChannelListener(StuffPerListenUriInfo stuff, ServiceHostBase serviceHost, Uri listenUri, ListenUriMode listenUriMode, Boolean supportContextSession, IChannelListener& result) at System.ServiceModel.Description.DispatcherBuilder.InitializeServiceHost(ServiceDescription description, ServiceHostBase serviceHost) at System.ServiceModel.ServiceHostBase.InitializeRuntime() at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustServiceHost.InitializeRuntime() at System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout) at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.ServiceHostingEnvironment.HostingManager.ActivateService(String normalizedVirtualPath) at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) --- End of inner exception stack trace --- at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) at System.ServiceModel.ServiceHostingEnvironment.EnsureServiceAvailableFast(String relativeVirtualPath) Process Name: w3wp 

 RESOLUTION: Uninstall KB 2756920

Get SPUser Object from SPListItem

Sometimes, you need to get SPUser object(to retrieve email, name,...) , however you have only SPListItem with SPFieldCollection. When you try to retrieve it, for example:

var field = item["user"]

you just get  a string with User ID , like : "123;#"

We need to cast this object to SPFieldUserValue.

This C# code can help us:

public SPUser GetSPUserObject(SPListItem spListItem, String fieldName)
    {
        SPUser spUser = null;
        try
        {
            if (fieldName != string.Empty)
            {
                SPFieldUser field = spListItem.Fields[fieldName] as SPFieldUser;
                if (field != null && spListItem[fieldName] != null)
                {
                    SPFieldUserValue fieldValue = field.GetFieldValue(spListItem[fieldName].ToString()) as SPFieldUserValue;
                    if (fieldValue != null)
                    {
                        spUser = fieldValue.User;
                    }
                }
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        return spUser;
    }