Concantenating PDFs generates a null reference

Aspose.PDF Product Family
1

I am having some issues with out of memory errors when combining many large PDFs. We were using 10.4 and I upgraded to 11.5 to see if that would resolve but created other issues. We are also using PDF.Word 15.10.
Now I am getting a null reference when I combine any PDF that is ASPOSE created.
I tried to go back to 10.4 but continue to get the errors.

System.NullReferenceException: Object reference not set to an instance of an object.



Aspose.Pdf.Facades.PdfFileEditor pdfEd = new Aspose.Pdf.Facades.PdfFileEditor();
foreach (var item in ultraListView1.Items)
{
if (item.CheckState == CheckState.Checked)
{
aDoc = localContext.ApplicationDocuments.Find(Guid.Parse(item.Key.ToString()));
f = new Aspose.Pdf.Facades.Form();
f.BindPdf(new MemoryStream(aDoc.DocumentBlob));
msDoc = new MemoryStream();
f.Save(msDoc);
msDocs.Add(msDoc);
}
}
msFinalPkg = new MemoryStream();
pdfEd.Concatenate(msDocs.ToArray(), msFinalPkg);

This worked with 10.4 except for the out of memory errors occasionally.

This seems to be very similar to:
Concatenating PDFs generated by Aspose.PDF fail with NullReferenceException

2

Hi Marc,


Thanks for contacting support.

Can you please share the resource files, so that we can test the scenario in our environment. We are sorry for this inconvenience.