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[George]

hi Tim

Sorry to say the error is still occuring

Server Error in '/cs' Application.

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Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL: 1. Add a "Debug=true" directive at the top of the file that generated the error. Example:   <%@ Page Language="C#" Debug="true" %> or: 2) Add the following section to the configuration file of your application: <configuration>    <system.web>        <compilation debug="true"/>    </system.web> </configuration> Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode. Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:

[HttpException (0x80004005): Unable to validate data.] System.Web.Configuration.MachineKeySection.GetDecodedData(Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Int32& dataLength) +2549708 System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +214 [ViewStateException: Invalid viewstate. Client IP: 192.168.3.4 Port: 2273 User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; InfoPath.1) ViewState: /wEPDwUKMTYxMzM3MDIwMGQYAQUeX19Db250cm9sc1JlcXVpcmVQb3N0QmFja0tleV9fFgIFUGN0bDAwJGN0bDAxJEJvZHlIZWFkZ XJSZWdpb24kRGlzcGxheXRpdGxlMSRjdGwwMCRTZWFyY2hSZWRpcmVjdCRjdGwwMCRTZWFyY2hUZXh0BTljdGwwMCRjdGwwMSRCb2R5Q29udG VudFJlZ2lvbiRjdGwwMCRjdGwwMCRTZWFyY2hGb3J1bUxpc3S3hZJigRRT0qPK0lAqeWMynvvRYA== Referer: http://www.completefrance.com/cs/search/Default.aspx Path: /cs/search/Default.aspx] [HttpException (0x80004005): Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.] System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) +116 System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) +251 System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) +4 System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) +37 System.Web.UI.HiddenFieldPageStatePersister.Load() +220 System.Web.UI.Page.LoadPageStateFromPersistenceMedium() +83 System.Web.UI.Page.LoadAllState() +35 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6953 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +154 System.Web.UI.Page.ProcessRequest() +86 System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +18 System.Web.UI.Page.ProcessRequest(HttpContext context) +49 ASP.search_default_aspx.ProcessRequest(HttpContext context) +4 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +154 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64