Navisworks Manage 2010 vs. AutoCAD 2008

This is a heads-up to the folks here that installing Navisworks Manage 2010 appears to hose AutoCAD 2008's VBA support.

Once I installed Navisworks my VBA code started returning errors on any layout's Block object. Uninstalling Navisworks restores AutoCAD's VBA support.

Note that this issue does not occur with AutoCAD 2010. I have an active support case open with Autodesk.

Symptom in AutoCAD:

Running the following code in AutoCAD will result in an error once the code gets to For Each aObj statement.

Code:

---

Sub Test()
  Dim aLayout As AcadLayout
  For Each aLayout In ThisDrawing.Layouts
    Dim aBlock As AcadBlock
    Set aBlock = aLayout.Block
    Debug.Print aBlock.Name & ": " & CStr(aBlock.Count)
    Dim aObj As AcadObject
    For Each aObj In aLayout.Block
      Debug.Print aObj.ObjectName
    Next aObj
  Next aLayout
End Sub

---

This issue has been resolved by Service Pack 1 for Navisworks 2010.

Oh joy - that means another program to roll out. Although at this point it might be worth waiting around for the 2011 release...