Have done so, thanks. I didn't see in the upgrade report any reference to the SQL script being run. Is that hidden behind "Performing general upgrades" or should I run it myself in host | SQL?

The error I noted with respect to viewstate "Validation of viewstate MAC failed" etc predates my upgrade from 311. Never used to see that but in the last couple of months it is quite frequent. Any ideas on this?

Thanks, Cathal, I'll check into those possibilities.

After upgrading to 435 and then also to 436 I am still getting problems with the treeviewmenu not appearing but instead throwing this error. Is there something new about the treeviewmenu or does it not exist anymore, or something I need to change in the skin?

ModuleId: -1
ModuleDefId: -1
FriendlyName:
ModuleControlSource:
AssemblyVersion: 04.03.06

UserID: 1
UserName: host
ActiveTabID: 406
ActiveTabName: Orders
RawURL: /StoreSettings/Orders/tabid/406/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: b3ae9b7a-716b-4c9e-8b4a-bdbe384b7424
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.UI.Skins.Controls.TreeViewMenu.BuildTree
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.UI.Skins.Controls.TreeViewMenu.BuildTree(DNNNode objNode, Boolean blnPODRequest) at DotNetNuke.UI.Skins.Controls.TreeViewMenu.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---
Source:
Server Name: HOST2