Hello,
I’m trying to convert a DXF to PDF with AsposeCad for .NET, ver 21.4.0.
I get this exception when converting : System.NullReferenceException: ‘Object reference not set to an instance of an object.’ on the using statement of the following code
				using (CadImage image = (CadImage)Image.Load(sourceFilePath))
			{
				CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();
				rasterizationOptions.UnitType = UnitType.Millimeter;					
				//A3
				rasterizationOptions.PageWidth = 420;
				rasterizationOptions.PageHeight = 297;
				rasterizationOptions.Layouts = new string[] {"Layout1" };
				rasterizationOptions.DrawType = CadDrawTypeMode.UseObjectColor;
				PdfOptions pdfOptions = new PdfOptions();
				pdfOptions.VectorRasterizationOptions = rasterizationOptions;
				string fileName = Path.GetFileName(sourceFilePath);
				string outputDir = Path.GetDirectoryName(sourceFilePath);
				string outputFileName = fileName.Replace(".dxf", ".pdf");
				string savePDFfilePath = outputDir + @"\" + outputFileName;
				image.Save(savePDFfilePath, pdfOptions);
			}