I have a portal version 04.05.01 that we would like to upgrade to 04.08.04. Tried upgrading to newest version and received errors two seperate times. Did some research and found some suggestions to upgrade to 04.06.02 first and then go to 04.08.04. When doing the 04.06.02 upgrade made sure that the Connection Strings and Machine Key were copied from the original web.config but the error still occured. Have upgraded many portals in the past but never had any problems, this one is giving me a headache. I have included the error message if someone could give any suggestions on how to fix this it would be very much appreciated.

Thanks,
James

Server Error in '/' Application.
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Value cannot be null.
Parameter name: type
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.ArgumentNullException: Value cannot be null.
Parameter name: type

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ArgumentNullException: Value cannot be null.
Parameter name: type]
System.Activator.CreateInstance(Type type, Boolean nonPublic) +2843963
DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +582
DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectNamespace, String ObjectAssemblyName) +17
DotNetNuke.Security.Membership.Data.DataProvider.CreateProvider() +38
DotNetNuke.Security.Membership.Data.DataProvider..cctor() +13

[TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.Data.DataProvider' threw an exception.]
DotNetNuke.Security.Membership.Data.DataProvider.Instance() +0
DotNetNuke.Security.Membership.AspNetMembershipProvider..cctor() +5

[TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.AspNetMembershipProvider' threw an exception.]

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) +0
System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) +103
System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) +268
System.Activator.CreateInstance(Type type, Boolean nonPublic) +66
DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +582
DotNetNuke.Security.Membership.MembershipProvider.CreateProvider() +38
DotNetNuke.Security.Membership.MembershipProvider..cctor() +13

[TypeInitializationException: The type initializer for 'DotNetNuke.Security.Membership.MembershipProvider' threw an exception.]
DotNetNuke.Security.Membership.MembershipProvider.Instance() +0
DotNetNuke.Entities.Users.UserController..cctor() +5

[TypeInitializationException: The type initializer for 'DotNetNuke.Entities.Users.UserController' threw an exception.]
DotNetNuke.Entities.Users.UserController.GetUserCountByPortal(Int32 portalId) +0
DotNetNuke.Entities.Portals.PortalInfo.get_Users() +17
DotNetNuke.Entities.Portals.PortalSettings.GetPortalSettings(Int32 TabId, PortalAliasInfo objPortalAliasInfo) +1302
DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabId, PortalAliasInfo objPortalAliasInfo) +83
DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +2874
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

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Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

Thanks for replying Jerry. Yes I've looked at Mitch's site, that is where I found the suggestion to go from 4.5 to 4.6 then to 4.8. Something about this portal is causing the problem and I can't seem to figure it out. I have performed several DNN upgrades without a hitch but this one is a pain. I did use the upgrade version of DNN, I guess I will try the install version and see if that makes any difference.

Thanks again,
James

Thanks Jerry for replying. Yes the application string was copied. Looking thru the web.config file I did notice that it contained a CodeSubDirectories Section that had "Survey". According to Mitchel Sellers blog that should be copied also, which I did not do. Mithcel's blog claimed this was for C# modules and looking at the Survey module under DesktopModules it looks to be the Core module which is VB. Could this possibly be the problem with the error I posted above?

Thanks again for any help,
James