Migration project from 4.4 tp 7.1

Hi,

I am upgrading my project form version 4.4 to 7.1. After upgrade when I go to my custom module in Content section, it gives me error of "Object reference not set" on every custom module(video file attached).

 Following error was log in error.log file

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Timestamp: 8/14/2014 6:59:59 AM

Message: HandlingInstanceID: f02eb0e5-4e8b-46fe-84b5-2b52cb129e5b
An exception of type 'System.NullReferenceException' occurred and was caught.
-----------------------------------------------------------------------------
08/14/2014 12:29:59
Type : System.NullReferenceException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : Object reference not set to an instance of an object.
Source : Telerik.Sitefinity
Help link :
Data : System.Collections.ListDictionaryInternal
TargetSite : Telerik.Sitefinity.Web.UI.ContentUI.Contracts.IContentViewDefinition GetDefaultMasterView()
HResult : -21474672612147467261
Stack Trace :    at Telerik.Sitefinity.Web.UI.ContentUI.ContentViewControlDefinition.GetDefaultMasterView()
   at Telerik.Sitefinity.Web.UI.ContentUI.ContentView.DetermineCurrentViewName()
   at Telerik.Sitefinity.Web.UI.ContentUI.ContentView.CreateChildControls()
   at System.Web.UI.Control.EnsureChildControls()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Additional Info:

MachineName : IDEA-PC
TimeStamp : 8/14/2014 6:59:59 AM
FullName : Telerik.Sitefinity.Utilities, Version=7.1.5200.0, Culture=neutral, PublicKeyToken=b28c218413bdf563
AppDomainName : c965fb-1-130524714762523764
ThreadIdentity : NP5
WindowsIdentity : idea-PC\Arvind
Requested URL : localhost:9085/.../genpact-resources


Category: ErrorLog

Priority: 0

EventId: 90000

Severity: Error

Title:Enterprise Library Exception Handling

Machine: IDEA-PC

App Domain: c965fb-1-130524714762523764

ProcessId: 3696

Process Name: C:\Program Files (x86)\Common Files\Microsoft Shared\DevServer\10.0\WebDev.WebServer40.exe

Thread Name:

Win32 ThreadId:6428

Extended Properties:
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Please help me find out the correct cause of this error.

 Thanks

Dipesh

Hello Dipesh,

In order to troubleshoot this issue I would like to kindly ask you to try re-installing Module builder. To make this please open SystemConfig.config, then remove the version number and restart the application: