Hi, 

I am trying to upgrade a DotNetNuke 04.09.05 site to DotNetNuke 05.04.01.
After copying the upgrade files into the sitefolder and refreshing the site i get the following error message:

System.Web.HttpException: Multiple controls with the same ID 'ScriptManager' were found. FindControl requires that controls have unique IDs. at System.Web.UI.Control.FillNamedControlsTable(Control namingContainer, ControlCollection controls) at System.Web.UI.Control.FillNamedControlsTable(Control namingContainer, ControlCollection controls) at System.Web.UI.Control.EnsureNamedControlsTable() at System.Web.UI.Control.FindControl(String id, Int32 pathOffset) at System.Web.UI.Page.FindControl(String id) at DotNetNuke.UI.Utilities.Globals.FindControlRecursive(Control objParent, String strControlName, String strClientID) at DotNetNuke.UI.Utilities.ClientAPI.GetDNNVariableControl(Control objParent) at DotNetNuke.UI.Utilities.ClientAPI.RegisterDNNVariableControl(Control objParent) at DotNetNuke.UI.Utilities.ClientAPI.GetClientVariableList(Page objPage) at DotNetNuke.UI.Utilities.ClientAPI.RegisterClientVariable(Page objPage, String strVar, String strValue, Boolean blnOverwrite) at DotNetNuke.UI.Utilities.ClientAPI.RegisterClientReference(Page objPage, ClientNamespaceReferences eRef) at DotNetNuke.UI.Utilities.ClientAPI.RegisterClientReference(Page objPage, ClientNamespaceReferences eRef) at DotNetNuke.UI.Utilities.ClientAPI.GetCallbackEventReference(Control objControl, String strArgument, String strClientCallBack, String strContext, String srtClientErrorCallBack, String strClientStatusCallBack, String strPostChildrenOfId, CallBackTypeCode eCallbackType) at DotNetNuke.UI.Utilities.ClientAPI.GetCallbackEventReference(Control objControl, String strArgument, String strClientCallBack, String strContext, String srtClientErrorCallBack, String strClientStatusCallBack, String strPostChildrenOfId) at DotNetNuke.UI.Utilities.ClientAPI.GetCallbackEventReference(Control objControl, String strArgument, String strClientCallBack, String strContext, String srtClientErrorCallBack) at DotNetNuke.Services.Install.InstallWizard.Page_Load(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Is anybody familiar whit this error?
Any information will be helpfull.

Maarten:

Starting with version 5.2 DNN requires ASP.Net 3.5.  See the install docs here: http://www.dotnetnuke.com/Resources/W....

By the way, since you can run DNN, using the Install Package, without having to compile or use any development tools, the way to change the version of .Net the site uses is by changing it in the IIS Management tool, in the ASP.Net tab of course.

Carlos