PdfConverter.HasNextImage Exception : Collection cannot be null. Parameter name: c

the version is 3.6.0.0

Exception : Collection cannot be null. Parameter name: c

on a PdfConverter.HasNextImage method

here is a code snippet to reproduce
string src=“a.pdf”;
string dst=“a.jpg”;
PdfConverter pc=new PdfConverter();
pc.BindPdf(src);
pc.Resolution = 5;
pc.StartPage=1;
pc.EndPage=1;
pc.DoConvert();
bool ok=false;
if (pc.HasNextImage())
{
pc.GetNextImage(dst,System.Drawing.Imaging.ImageFormat.Jpeg,5,5,75);
ok=true;
}

Thanks

Please refer to this thread for follow up: http://www.aspose.com/community/forums/197811/private-pdfconverter.hasnextimage-exception-collection-cannot-be-null.parameter-name-c/showthread.aspx#197811