Attempted to read or write protected memory

[Matt_Spinks@adobeforums.com]

I am attempting to convert a PDF document into a jpg image. I have the code in place and understand how it works:

Dim a As New Acrobat.AcroPDDoc()
Dim jso As Object
If a.Open(C:\doc.pdf") Then
jso = a.GetJSObject
jso.SaveAs("c:\test.jpg", "com.adobe.acrobat.jpeg")
End If
a.Close()

But I am getting a memory error when it tries to execute the "a.Open" statement. The memory error is "Attempted to read or write protected memory..." I cannot find a solution for this anywhere. Can anyone help? Thanks.

Matt Spinks

[Leonard_Rosenthol@adobeforums.com]

What version of Acrobat on what OS platform?

[Matt_Spinks@adobeforums.com]

Acrobat 9
Visual Studio 2008
..NET 3.5
Windows XP Professional

[Leonard_Rosenthol@adobeforums.com]

I believe you need to instantiate the app before the document. Have you checked the sample code?

[Matt_Spinks@adobeforums.com]

Yes and yes. I have looked at the code and I have also tried instanciating the app first. My code looks basically the same as the sample code with different file names, etc. I have even tried running the sample directly from the included solution within VS2008 and I get the same error on the "open" statement.

Matt