Automatically adding a background pdf creates an error 26999

[BenK885]

I added a second printer and created a profile to automatically add a background pdf.

But printing with this printer creates an error message:
"Es ist ein Fehler aufgetreten: 26999 - Fehler beim Bearbeiten des Dokumentes."
which basically means:
"An error has occurred: 26999 - Error while editing the document."

I use clawPDF 0.9.1 on Windows 11 Pro 22H2 x64
Also tested clawPDF 0.9.1 on Windows 10 Pro 22H2 x64 Build 19045.2846

Screenshot of the error message and a debug log capturing one failing printing attempt attached.

Thank you so much for any support

Maybe some useful information: ArgumentNullException Class

clawPDF.log

2023-04-26 00:18:28.3345 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue..ctor: Spool folder is 'C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool' 
2023-04-26 00:18:28.3955 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Init: Temp folder is 'C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp' 
2023-04-26 00:18:28.3955 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.Run: Starting attempt 1:  
2023-04-26 00:18:28.4075 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Starting pipe server 
2023-04-26 00:18:28.4075 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.StartPipeServerThread: Starting pipe server thread 
2023-04-26 00:18:28.4075 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Reloading settings 
2023-04-26 00:18:28.5257 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Finding spooled jobs 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.FindSpooledJobs: Looking for spooled jobs in 'C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool' 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.FindSpooledJobs: Searching for spooled jobs 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.FindSpooledJobs: Found job info: C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.inf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: New JobInfo: C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.inf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: DocumentTitle: rep_LieferscheinBlanko.pdf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: ClientComputer: HECKNERWIN11VM 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: SessionId: 1 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: PrinterName: Digitaler Lieferschein 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: JobCounter: 0 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: JobId: 8 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: Added JobInfo: C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.inf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.StartSynchronizedThread: Adding thread ProcessingThread 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.NewPrintJobStart.StartApplication: Adding new job 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: New JobInfo: C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.inf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: DocumentTitle: rep_LieferscheinBlanko.pdf 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: ClientComputer: HECKNERWIN11VM 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: SessionId: 1 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: PrinterName: Digitaler Lieferschein 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: JobCounter: 0 
2023-04-26 00:18:28.5287 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.JobInfoQueue.Add: JobId: 8 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.TryStartApplication: Starting Cleanup thread 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.StartCleanUpThread: Starting cleanup 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.StartSynchronizedThread: Adding thread CleanUpThread 
2023-04-26 00:18:28.5437 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.JobRunner.ProcessJobs: New PrintJob C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.inf from Printer Digitaler Lieferschein 
2023-04-26 00:18:28.5437 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.JobRunner.ProcessJob: Creating job workflow 
2023-04-26 00:18:28.5437 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.WorkflowFactory.CreateWorkflow: Creating Workflow 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Startup.MaybePipedStart.Run: TryStartApplication: True 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.WaitForThreads: Waiting for all synchronized threads to end 
2023-04-26 00:18:28.5437 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.WaitForThreads: 1 Threads remaining 
2023-04-26 00:18:28.5617 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.WorkflowFactory.CreateWorkflow: Profile: Digitaler Lieferschein (GUID 37ed383a-07a2-4c1e-ade5-d9d776e27ad9) 
2023-04-26 00:18:28.5617 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.NumberOfPagesFromSourceFiles: Number of pages from source files: 1 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.get_NumberOfCopies: Number of copies from source files: 1 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob..ctor: Ghostscript Version: 10 loaded from C:\Program Files (x86)\clawpdf\gsdll64.dll 
2023-04-26 00:18:28.5777 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.WorkflowFactory.CreateWorkflow: Creating InteractiveWorkflow 
2023-04-26 00:18:28.5777 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.JobRunner.ProcessJob: Running workflow 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: Starting conversion... 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: clawPDF Version: v0.9.1 (Alpaca) 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: OSVersion: Windows 10 Pro (Microsoft Windows NT 6.2.9200.0) 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.NumberOfPagesFromSourceFiles: Number of pages from source files: 1 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.get_NumberOfCopies: Number of copies from source files: 1 
2023-04-26 00:18:28.5777 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: Querying the place to save the file 
2023-04-26 00:18:30.7671 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: Output filename template is: C:\Users\Heckner\Desktop\Lieferscheine einsortieren\rep_LieferscheinBlanko.pdf 
2023-04-26 00:18:30.7671 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: Output format is: Pdf 
2023-04-26 00:18:30.7671 [Info] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.DoWorkflowWork: Converting C:\Users\Heckner\Desktop\Lieferscheine einsortieren\rep_LieferscheinBlanko.pdf 
2023-04-26 00:18:30.7671 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Threading.ThreadManager.StartSynchronizedThread: Adding thread ProgressForm 
2023-04-26 00:18:30.7671 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.RunJob: Starting job 
2023-04-26 00:18:30.7821 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob.RunJobWork: Setting up actions 
2023-04-26 00:18:30.7821 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob.SetUpActions: Viewer-Action added 
2023-04-26 00:18:30.7821 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob.RunJobWork: Starting Ghostscript Job 
2023-04-26 00:18:30.7821 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob.RunJobWork: Output format is: Pdf 
2023-04-26 00:18:30.8031 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.NumberOfPagesFromSourceFiles: Number of pages from source files: 1 
2023-04-26 00:18:30.8031 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Ghostscript.OutputDevices.OutputDevice.GetGhostScriptParameters: Created metadata file "C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\metadata.mtd" 
2023-04-26 00:18:30.8031 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Ghostscript.GhostScript.Run: Ghostscript Parameters:
gs
-sFONTPATH=C:\Windows\Fonts;C:\Program Files (x86)\clawpdf\fonts
-dNOPAUSE
-dBATCH
-sOutputFile=C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\tempoutput\output.pdf
-sDEVICE=pdfwrite
-dCompatibilityLevel=1.4
-dPDFSETTINGS=/default
-dEmbedAllFonts=true
-dAutoRotatePages=/PageByPage
-dParseDSCComments=false
-sColorConversionStrategy=CMYK
-dProcessColorModel=/DeviceCMYK
-dAutoFilterColorImages=true
-dAutoFilterGrayImages=true
-dEncodeColorImages=true
-dEncodeGrayImages=true
-dColorImageFilter=/DCTEncode
-dGrayImageFilter=/DCTEncode
-dEncodeMonoImages=true
-dMonoImageFilter=/CCITTFaxEncode
-f
C:\Users\Heckner\AppData\Local\Temp\clawPDF\Spool\{EECE13CC-11AC-4B5C-8091-4A16820D16BA}.ps
C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\metadata.mtd 
2023-04-26 00:18:31.0411 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.GhostscriptJob.RunJobWork: Finished Ghostscript execution 
2023-04-26 00:18:31.0411 [Debug] 656-6 (ProcessingThread) clawSoft.clawPDF.PDFProcessing.PDFProcessor.ProcessPDF: Start processing of C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\tempoutput\output.pdf 
2023-04-26 00:18:31.0550 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.PDFProcessing.PDFProcessor.OpenPdfDocument: Der Zeichenfolgenverweis ist nicht auf einen Zeichenfolgeninstanz festgelegt.
Parametername: s 
2023-04-26 00:18:31.0550 [Error] 656-6 (ProcessingThread) clawSoft.clawPDF.PDFProcessing.PDFProcessor.ProcessPDF: System.ArgumentNullException while processing file:C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\tempoutput\output.pdf
Der Zeichenfolgenverweis ist nicht auf einen Zeichenfolgeninstanz festgelegt.
Parametername: s 
2023-04-26 00:18:31.0550 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.Core.Jobs.AbstractJob.RunJob: Calling job completed event 
2023-04-26 00:18:31.0550 [Error] 656-6 (ProcessingThread) clawSoft.clawPDF.Workflow.ConversionWorkflow.RunWorkflow: Error 26999: System.ArgumentNullException while processing file:C:\Users\Heckner\AppData\Local\Temp\clawPDF\Temp\Job_dxuesymo\tempoutput\output.pdf
Der Zeichenfolgenverweis ist nicht auf einen Zeichenfolgeninstanz festgelegt.
Parametername: s 
2023-04-26 00:18:43.5407 [Error] 656-6 (ProcessingThread) clawSoft.clawPDF.JobRunner.ProcessJob: The job 'rep_LieferscheinBlanko' terminated at step Convert and did not end successfully. 
2023-04-26 00:18:43.5407 [Trace] 656-6 (ProcessingThread) clawSoft.clawPDF.JobRunner.ProcessJobs: Removing job from Queue 
2023-04-26 00:18:43.5657 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.WaitForThreads: All synchronized threads have ended 
2023-04-26 00:18:43.5957 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Shutting down the application 
2023-04-26 00:18:43.5957 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Preparing PipeServer for ShutDown 
2023-04-26 00:18:43.5957 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Saving settings 
2023-04-26 00:18:43.8167 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Stopping pipe server 
2023-04-26 00:18:43.8307 [Debug] 656-1 (ProgramThread) clawSoft.clawPDF.Threading.ThreadManager.Shutdown: Exiting... 

clawPDF.log

[NitroxydeX]

We're facing the same issue right now. Removing the add Background options makes the print-job working again

[NitroxydeX]

When adding Encryption into the mix it works even with Background enabled

But there is another problem: It's not added into the background but rather to the foreground putting the original printed document behind the background pdf.

[clawsoftware]

Hi @BenK885 and @NitroxydeX,

I have fixed both bugs. Can you please test if it also works for you? Thank you.
https://github.com/clawsoftware/clawPDF/raw/master/src/_MSI/clawPDF_0.9.2_setup.msi

[NitroxydeX]

@clawsoftware Hey thanks, it works now!

[BenK885]

@clawsoftware
Awesome! It works great now. Thank you!