Exporting to dwg

Hello everyone,

I'm writing a VB-module to export geometry to .dwg files. Everything seemed to word fine, but now I've switched computers, somehow the module doesn't seems to work anymore...

I'm running Rhino 5 WIP released 18-01-2011 and grasshopper 0.8.0004 released december 10th 2011.

This is (part of) the script I'm running:

If Activate = True Then

      Dim i As Integer
      Dim iCount As Integer
      iCount = SrfId.Count

      Dim y As Integer
      Dim yCount As Integer

      Dim mObjects As Guid

      Dim ylist As New list (Of Integer)

      For i = 0 To iCount - 1

        doc.Objects.UnselectAll
        yCount = SrfLines.Branch(i).Count

        For y = 0 To yCount - 1
       
          mObjects = doc.Objects.AddCurve(SrfLines(SrfId(i), y))
          doc.Objects.Select(mObjects)

        Next  

        RhinoApp.RunScript("_-export " & FilePath(i) & " _Enter", True)
        RhinoApp.RunScript("_-delete", True)

      Next

    End If

The error I get is this:

'select' is not a member of 'rhino.docobjects.tables.objecttable'

The silly thing is that I didn't get the error on a different computer (which probably has some different versions installed...), but that I also cannot find any other way to select and export the geometry I create...

Does anybody have a good idea how to solve this problem?

Thank you very much!

Pieter Schreurs