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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Upgrade fails: Value cannot be null. Parameter name: sourceUpgrade fails: Value cannot be null. Parameter name: source
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9/30/2015 11:08 AM
 

I want to upgrade DNN 6.2.8 to DNN 7.4.1 but I get the error below. Even if I perform the upgrade in smaller steps, this error comes above version 7.2. How can I fix this?

Server Error in '/' Application.


Value cannot be null.
Parameter name: source

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: source

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: source]
   System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source, Func`2 predicate) +467
   DotNetNuke.Entities.Portals.PortalAliasController.GetPortalAliasLookupInternal(String alias) +95
   DotNetNuke.Entities.Portals.PortalAliasController.GetPortalAliasInternal(String httpAlias) +31
   DotNetNuke.Entities.Portals.PortalAliasController.GetPortalAlias(String alias) +5
   DotNetNuke.Entities.Portals.PortalSettings.GetPortalAliasInfo(String portalAlias) +26
   Active.Modules.Forums.ForumsReWriter.OnBeginRequest(Object s, EventArgs e) +430
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69

 


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34249

 
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9/30/2015 6:34 PM
 
you might Need to upgrade via DNN 7.1.2

Cheers from Germany,
Sebastian Leupold (Microsoft MVP)

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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10/1/2015 5:03 AM
 
I found that Active Forums module caused the problem. I had to delete the two .dll files from the Bin folder and the line in web.config containing Active Forums in order to fix it.
 
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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Upgrade fails: Value cannot be null. Parameter name: sourceUpgrade fails: Value cannot be null. Parameter name: source


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