I have installed the pmdg 737-800/900 and 737-600/700. I'm using FSX in DX10 preview combined with the DX10 scenery fixer and some other scenery addons. When I try to install the Immersion package I get the following message:

 

 

Installation Error: System.InvalidOperationException: Die Auflistung wurde geändert. Der Enumerationsvorgang kann möglicherweise nicht ausgeführt werden.
   bei System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   bei System.Collections.Generic.List`1.Enumerator.MoveNextRare()
   bei System.Collections.Generic.List`1.Enumerator.MoveNext()
   bei c.a(Boolean A_0)
   bei VFXCentral.MainWindow.a(Object A_0, DoWorkEventArgs A_1)
   bei System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
   bei System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object Argument)

 

 

I read about it to move or rename the uninstalled 737-600/700 folder but I haven't got it. Where to move? Rename? Is it this issue?

 

I had switched to DX9 once after the failed installation but had the same error message.

I have sent a message to the support yet.

I reinstalled the pmdg (what the support told me to do) and the fsfx installation worked.