One-way upgrade from Visual Studio 2005 to Visual Studio 2015 (SSIS and SSAS projects)

I was provided with a set of code that was developed in Visual Studio 2005 and needs to be migrated to Visual Studio 2015.

About coding: This is a mix of SSIS and SSAS projects. About Machine: Visual Studio 2015 Server MSSQL 2016 with SSIS, SSRS and SSAS installed

When Visual Studio 2015 tries to update the code, it crashes halfway through and restarts. There was no prompt for error. From Event Viewer I got this

Application: devenv.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Reflection.TargetInvocationException
Stack:
   at Microsoft.VisualStudio.Shell.Interop.IVsUIShell.GetDialogOwnerHwnd(IntPtr ByRef)
   at Microsoft.DataWarehouse.VsIntegration.Shell.Service.DataWarehouseEnvironmentService.get_TopmostWindow()
   at Microsoft.DataWarehouse.Design.ErrorReportingService.ShowNetServersErrorMessage(ErrorInfo)
   at Microsoft.DataWarehouse.Design.ErrorReportingService.ShowErrorMessage(ErrorInfo)
   at Microsoft.DataWarehouse.Design.ErrorReportingService.ShowPendingErrors()
   at Microsoft.DataWarehouse.VsIntegration.Shell.Project.FileProjectHierarchy.InitializeSourceControl()
   at Microsoft.DataWarehouse.VsIntegration.Shell.Project.FileProjectHierarchy.Load(System.String, UInt32, Int32)
   at Microsoft.DataWarehouse.VsIntegration.Shell.Service.DataWarehouseProjectManagerService.CreateProject(System.String, Int32, Microsoft.DataWarehouse.VsIntegration.Designer.Serialization.DocumentObject, Microsoft.DataWarehouse.VsIntegration.Shell.Project.IFileProjectManager, System.Guid)
   at Microsoft.DataWarehouse.VsIntegration.Shell.Service.DataWarehouseProjectManagerService.CreateProject(System.String, System.Guid)
   at Microsoft.DataWarehouse.VsIntegration.Shell.PVsProjectFactory.CreateProject(System.String, System.String, System.String, UInt32, System.Guid ByRef, IntPtr ByRef, Int32 ByRef)
   at Microsoft.VisualStudio.Shell.Interop.IVsUIDataSource.Invoke(System.String, System.Object, System.Object ByRef)
   at Microsoft.Internal.VisualStudio.PlatformUI.DataSource.Invoke(System.String, System.Object, System.Object ByRef)
   at Microsoft.VisualStudio.PlatformUI.VsCommand.Execute(System.Object)
   at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(System.Windows.Input.ICommandSource, Boolean)
   at System.Windows.Controls.MenuItem.InvokeClickAfterRender(System.Object)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)

      

        
        
        
      

    

I suspect this is an incompatible dll, but I'm not sure. There is an existing dll in. \ Common7 \ IDE \ PrivateAssemblies \ Microsoft.DataWarehouse.VsIntegration.DLL

Only one SSIS / SSAS project crashes the IDE.

Is there a way I get around this? Or have I missed the step on how to migrate SSIS / SSAS projects?

Thanks in advance.