"Cannot insert, delete, append or replace pages" error.

Hello,

  I am having the "Cannot insert, delete, append or replace pages" error sporadically when saving a PDF file. My application is an ASP.NET application which converts multipage TIFF documents to PDF files. The error doesn't seem to have to do with the TIFF file itself. I can try and convert the same TIFF file ten times with the same exact code and nine times it will work and one time it will fail. The error seems to occur totally randomly.

  Due to the fact that some pages within a few of the TIFF files on our system are corrupt, I have to read the TIFF files in one page at a time and then output them to the pdf file one page at a time. If I run into a corrupt page in the TIFF file, then I just skip that page in the PDF output.

  My code (roughly) looks like:

  String myTIFFFile = @"c:\color.tif";
  String myPDFFile = @"c:\color.pdf";

  LeadTools.Codecs.RasterCodecs.CodecsPath = @"C:\LEADTOOLS_CODECS\";
  RasterCodecs codecs = new RasterCodecs();

  int totalPages = codecs.GetInformation(myTIFFFile, true).TotalPages;

  for(int i=1; i <= totalPages; i++) {
    IRasterImage tiffPage = codecs.Load(myTIFFFile, 0, CodecsLoadByteOrder.Rgb, i, i);
    codecs.Save( tiffPage, myPDFFile, RasterImageFormat.RasPdfJpeg422, 24, 1, 1, i, CodecsSavePageMode.Append );
  }

This is causing a big problem and I have no ideas where to look. Any suggestions?

Thanks,

Jeff Smith
System Support Analyst
City of Henderson

Hi Maen,

  My first thought was just what you said, that some other process was locking the file or something along those lines. I don't believe that is the case though, I use a unique file name (basically a guid) which I output the PDF to and then rename to the final file name right at the end. Leadtools is erroring during the save to the unique file name, so I know my own process is not using that file, since nobody else would know the file name. I have also disabled anti-virus to make sure that anti-virus isn't grabbing and locking the file for a scan. I have also monitored the file system with sysinternals' filemon tool and I can see no other process that is attempting to access the file when it errors.

  I see no common thread to the errors. The page numbers it occurs on are totally random. I have had an easier time generating the error lately though. I can usually generate it within about 5-10 requests now. I notice the larger the file I am converting, the more likely the problem is to occur.

  Any other suggestions?

Thanks,

Jeff

I reworked some of the code to try loading the entire TIFF file at once and then converting the whole thing to PDF in one fail swoop and it sometimes works and sometimes doesn't, it's totally random, but I get a different error. I get a "Leadtools error: -824" when running the codecs.Save function.

I looked up the -824 error and someone on the forum said that error indicates ERROR_JB2_FILTER_MISSING. I have checked and the Leadtools.Codecs.Jb2.dll file does definitely exist in my codec path. Plus, if that was the problem, I would think it would happen every time.

I can't help but think these two errors are related. Does this help at all?

Thanks,

Jeff

Hi Maen,

  I have uploaded a TIFF image that will cause both the errors described in this thread, sporadically. Sometimes it converts fine, sometimes it errors. Due to the size of the TIFF (27mb), I uploaded to the LeadTools FTP site. The file is "/CityOfHenderson/errorConvertingToPDF.tif".

Thanks,

Jeff Smith
System Support Analyst
City of Henderson, NV

I tried using your attached project and I was unable to get the same error that I am receiving.

The LEADTOOLS .Net DLLs version is 14.5.0.13.

-Jeff