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Image loading failed: Arithmetic operation resulted in an overflow

Trying to convert dwf to PDF using c# (Aspose.CAD v20.7.0):

           using (DwfImage cadImage = (Aspose.CAD.FileFormats.Dwf.DwfImage)Image.Load(cadFile))
                CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions
                    PageWidth = isA3 ? 420 : 297,
                    PageHeight = isA3 ? 297 : 210,
                    UnitType = UnitType.Millimeter,
                    AutomaticLayoutsScaling = false,
                    Zoom = 0.9F

                PdfOptions pdfOptions = new PdfOptions
                    VectorRasterizationOptions = rasterizationOptions

                cadImage.Save(pdfFile, pdfOptions);


however it is failing with some files with the following error at the Image.Load stage:

  Image loading failed: Arithmetic operation resulted in an overflow.

The file is a (DWF V06.00) and opens in dwf viewer just fine.

Can you suggest any reason for this error? Anything I can try as it seems to be common.

Happy to share the dwf file so you can try it yourself.


at . ​ (Int32 , Int32 )
at Aspose.CAD.FileFormats.Dwf.Whip.Objects.Drawable.DwfWhipPointSet.Materialize16Bit( parser)
at Aspose.CAD.FileFormats.Dwf.Whip.Objects.Drawable.DwfWhipPolymarker.Materialize( operationCode, parser)
at .()
at .()
at .()
at .LoadDrawableResources(List`1 )
at Aspose.CAD.FileFormats.Dwf.DwfImage.CreateEplotImage()
at Aspose.CAD.FileFormats.Dwf.DwfImage…ctor( dwfPackageManager)
at .Parse(Stream , LoadOptions )
at Aspose.CAD.FileFormats.Dwf.DwfLoader.Load(StreamContainer streamContainer, LoadOptions loadOptions)
at Aspose.CAD.Image.LoadImage(StreamContainer streamContainer, LoadOptions loadOptions)


Can you please share the source CAD file reproducing the issue on your end so that we may investigate the issue further on our end to help you out.