Help opening autocad in VB 2008

We are having much trouble opening a AutoCad 2010 file in VB 2008. This is the error we get:

Creating an instance of the COM component with CLSID {6D7AE628-FF41-4CD3-91DD-34825BB1A251} from the IClassFactory failed due to the following error: 80010001.

For this code (code that was highlight *):

Private Sub btnStartACAD_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnStartACAD.Click, btnStartACAD.Click

'Opens AutoCAD and makes it visible

* AcadApp = New Autodesk.AutoCAD.Interop.AcadApplication

AcadApp.Visible = True

End Sub

Would this help?

Dim process As System.Diagnostics.Process

Process = System.Diagnostics.Process.Start(programPath)

Process.WaitForExit()

this does work but I cant associate it with AutoCad as I would like to make it as a document to be able to draw to it, save it, etc.

unless I can tie this to be an autocad app somehow...

Not sure I totally understand but you may be using an older or newer library reference than the one needed; try some different ones out and or load up on a bunch.......just my guess.

sorry, what i mean is I need to associate the process as an Acad Application. So then I can associate the running instance (or application) as an Acad Document that I could draw to and eventually save as.

I came up with this code as well

AcadApp = GetObject(, "AutoCad.Application")

AcadApp.Visible = True ' makes it visible as it runs in the back by default

but the problem with this code is its basically a lottery, sometimes it works and sometimes it doesnt

public AcadApplication GetAcadApplication()

{

AcadApplication acApp = null;

const string progID = "AutoCAD.Application";

try

{

acApp = (AcadApplication)Marshal.GetActiveObject(progID);

}

catch

{

try

{

acApp = new AcadApplication();

}

catch

{

System.Threading.Thread.Sleep(500);

acApp = (AcadApplication)Marshal.GetActiveObject(progID);

}

}

if (acApp != null)

{

acApp.Visible = true;

}

return acApp;

}