GhostscriptAPICallException: An error occured when call to 'gsapi_new_instance' is made: -100 about ghostscript.net

[bkwdesign]

@Amonra69 - I finally figured out that I need to roll back to GS 9.26 before the .NET wrapper works correctly

[EricSmekens]

I have the same error, when I call StartProcessing.

[mehdyh]

Fixed the issue by changing
_rasterizer.Open(mm, lastInstalledVersion, false);
to
_rasterizer.Open(mm, lastInstalledVersion, true);

[JenkaJmenka]

I'm sorry for my question
I have the same error.
Any ideas how it can be solved?

[jhabjan]

Error -100 means that you are passing some bad parameters or you can try mehdymohajery solutoin.

[dherbe]

I also got this error and It really wasn't because of bad arguments.
mehdymohajery suggestion worked perfectly.
thanks

[csharpner]

@mehdymohajery what is this lastInstalledVersion? Where/how do I get it?

[cpayne22]

@csharpner this worked for me:

GhostscriptVersionInfo gsVersionInfo = GhostscriptVersionInfo.GetLastInstalledVersion(GhostscriptLicense.GPL | GhostscriptLicense.AFPL, GhostscriptLicense.GPL);

Source: https://stackoverflow.com/q/26917330/5188

[bkwdesign]

I'm still getting this error and none of the solutions posted above worked. I just finished running the .exe to install Ghostscript to my Windows 10 workstation on C:/Ghostscript

I can see my "last version info" is being detected successfully when I debug:

Here's my code snippet that is failing:

    int desired_x_dpi = 96;
    int desired_y_dpi = 96;

   string inputPdfPath = "sample.pdf";

   using (var rasterizer = new GhostscriptRasterizer())
   {
        GhostscriptVersionInfo gsVersionInfo = GhostscriptVersionInfo.GetLastInstalledVersion(GhostscriptLicense.GPL | GhostscriptLicense.AFPL, GhostscriptLicense.GPL);

        byte[] buffer = File.ReadAllBytes(inputPdfPath);
        MemoryStream ms = new MemoryStream(buffer);
               
        rasterizer.Open(ms, gsVersionInfo, true);
   }

[Amonra69]

Same issue, Solution of @mehdyh doesn't work. I try to setup dll manually but it doesn't work again

            int desired_x_dpi = 96;
            int desired_y_dpi = 96;

            string inputPdfPath = @"C:\image.pdf";
            string outputPath = @"C:\";

            var _lastInstalledVersion = new GhostscriptVersionInfo(Version.Parse("9.53.3"), @"C:\Program Files (x86)\gs\gs9.53.3\bin\gsdll32.dll", @"C:\Program Files (x86)\gs\gs9.53.3\lib\gsdll32.lib", GhostscriptLicense.GPL);

            using (var _rasterizer = new GhostscriptRasterizer())
            {
                

                //MemoryStream usage sample


                byte[] buffer = File.ReadAllBytes(inputPdfPath);
                MemoryStream ms = new MemoryStream(buffer);
   


                _rasterizer.Open(inputPdfPath, _lastInstalledVersion, true);

                for (int pageNumber = 1; pageNumber <= _rasterizer.PageCount; pageNumber++)
                {
                    string pageFilePath = Path.Combine(outputPath, "Page-" + pageNumber.ToString() + ".png");

                    Image img = _rasterizer.GetPage(desired_x_dpi, desired_y_dpi, pageNumber);
                    img.Save(pageFilePath, ImageFormat.Png);

                    Console.WriteLine(pageFilePath);
                }
            }

[Amonra69]

@Amonra69 - I finally figured out that I need to roll back to GS 9.26 before the .NET wrapper works correctly

you save my time
thank you

[brothers-morrison]

note:
this did NOT fix it for me
@Amonra69 - (https://stackoverflow.com/a/56230513/1520850) [you] need to roll back to GS 9.26 before the .NET wrapper works correctly

Trying to use Ghostscript.NET out of the box with the following
switches: -sDEVICE=mswinpr2 -dNoCancel=true -dQueryUser=3 -dPrinted -dBATCH -dNOPAUSE -dNOPROMPT -dNOSAFER -dNumCopies=1 -sOutputFile="%printer%\\network_installed\printer1" "\\network_fileshare\LS-F123.pdf"