I am getting the following error when trying to access my SharePoint site admin via Start > Microsoft Office Server > SharePoint Central Administration
Exception Details: System.MissingMethodException: Method not found: 'Void Microsoft.SharePoint.Library.SPRequestInternalClass.SetHttpParameters(System.String, System.String, UInt32, Byte[] ByRef, Boolean, System.String, UInt32, System.String, Boolean, Boolean, Int32, Microsoft.SharePoint.Library.ISPManagedObjectFactory)'.
Stack Trace:
[MissingMethodException: Method not found: 'Void Microsoft.SharePoint.Library.SPRequestInternalClass.SetHttpParameters(System.String, System.String, UInt32, Byte[] ByRef, Boolean, System.String, UInt32, System.String, Boolean, Boolean, Int32, Microsoft.SharePoint.Library.ISPManagedObjectFactory)'.]
Microsoft.SharePoint.Library.SPRequest.SetHttpParameters(String bstrHttpMethod, String bstrRequestDigest, UInt32 flags, Byte[]& ppsaImpersonateUserToken, Boolean bIgnoreTimeout, String bstrUserId, UInt32 ulRoleCount, String bstrRoles, Boolean bWindowsMode, Boolean bInvalidateCachedConfigurationProperties, Int32 lAppDomainId, ISPManagedObjectFactory pFactory) +0
Microsoft.SharePoint.SPGlobal.CreateSPRequestAndSetIdentity(Boolean bNotGlobalAdminCode, String strUrl, Boolean bNotAddToContext, Byte[] UserToken, Boolean bIgnoreTokenTimeout, Boolean bAsAnonymous) +3272
Microsoft.SharePoint.SPRequestManager.GetContextRequest(SPRequestAuthenticationMode authenticationMode) +335
Microsoft.SharePoint.Administration.SPFarm.get_RequestNoAuth() +33
Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.get_Hash() +197
Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.get_AppDomainIdHeader() +180
Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.OverrideExecuteUrlPath() +881
System.Web.DefaultHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback callback, Object state) +135
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +392
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +263
I am using .Net Framework 2.0. Sharepoint 2007. IIS 6.1 (SP1). WS 2008 R2 on x64
Has anyone came across the error? Many thanks