Autocad 2014 / VB.NET ModelSpace error

[rafal.watroba]

The problem seems to be elementary, but I can't find solution.

After migratting my program (VB.NET using COM) to AutoCAD 2014 (from 2012) I get an error when access Document.ModelSpace (Element not found. (Exception from HRESULT: 0x8002802B (TYPE_E_ELEMENTNOTFOUND)).

I started new, clear solution, added references to:

Autodesk.AutoCAD.Interop.dll

Autodesk.AutoCAD.Interop.Common.dll

I wrote this simple code:

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Dim acad As Autodesk.AutoCAD.Interop.AcadApplication
        acad = CType(Marshal.GetActiveObject("AutoCAD.Application"), Autodesk.AutoCAD.Interop.AcadApplication)
        Dim d As Autodesk.AutoCAD.Interop.AcadDocument = acad.ActiveDocument
        Dim m As Autodesk.AutoCAD.Interop.Common.AcadModelSpace = d.ModelSpace
        ...
    End Sub

I still get an error at line "Dim m As Autodesk.AutoCAD.Interop.Common.AcadModelSpace = d.ModelSpace".

[rafal.watroba · Accepted solution]

I found solution.

I needed to change active platform from x86 to AnyCPU.

I don't know why my vb.net started new project with x86 platform.