I already replaced the existing dll files with the attached files but I get an error, my site does not work at all as the attached image below.
This
event
has been logged and will be addressed by the maintenance department. We appreciate your patience.
Could not load type
'System.Runtime.CompilerServices.ExtensionAttribute'
from assembly
'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
.
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.ModuleHandle.ResolveTypeHandle(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.GetCustomAttributes(RuntimeModule decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType) at System.Runtime.Serialization.DataContract.IsAssemblyFriendOfSerialization(Assembly assembly) at System.Runtime.Serialization.DataContract.IsTypeVisibleInSerializationModule(Type type) at System.Runtime.Serialization.DataContract.IsMemberVisibleInSerializationModule(MemberInfo member) at System.Runtime.Serialization.DataContract.FieldRequiresMemberAccess(FieldInfo field) at System.Runtime.Serialization.ClassDataContract.RequiresMemberAccessForWrite(SecurityException securityException) at System.Runtime.Serialization.XmlFormatWriterGenerator.CriticalHelper.GenerateClassWriter(ClassDataContract classContract) at System.Runtime.Serialization.ClassDataContract.get_XmlFormatWriterDelegate() at System.Runtime.Serialization.ClassDataContract.WriteXmlValue(XmlWriterDelegator xmlWriter, Object obj, XmlObjectSerializerWriteContext context) at System.Runtime.Serialization.NetDataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator writer, Object graph, DataContract contract, Hashtable surrogateDataContracts) at System.Runtime.Serialization.NetDataContractSerializer.InternalWriteObject(XmlWriterDelegator writer, Object graph) at System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator writer, Object graph, DataContractResolver dataContractResolver) at System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter writer, Object graph) at MonoSoftware.Core.NETDataContractSerializer.Serialize(Object o) at MonoSoftware.LLBLGen.LookupDefinition.#0Q() at MonoSoftware.Web.Workspace.Lookup`1.GetInstance(Object parentId, SelectQueryDefinition selectQueryDefinition, IEntityField2 displayField, LookupUIType preferredUIType) at MonoSoftware.MonoX.DAL.EntityClasses.PrivacyLevelEntity.get_PrivacyLevelFriends() at MonoSoftware.MonoX.Repositories.EventRepository.GetEventsFilter(EventArguments args) at MonoSoftware.MonoX.Repositories.EventRepository.GetEvents(EventArguments args) at MonoSoftware.MonoX.ModuleGallery.SocialNetworking.Events.FetchEventCollection(EventArguments args, PagedCollectionContainer bindContainer) at MonoSoftware.MonoX.ModuleGallery.SocialNetworking.Events.BindData() at MonoSoftware.MonoX.ModuleGallery.SocialNetworking.Events.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)