Problem with unattended printing v. 2.2.1

Hi all.
We are testing with the free version of PDF Creator. specifically 2.2.1 to make unattended printing tests.
Sometimes an exception appears that I transcribe below:

Error Report for PDFCreator v2.2.1.1031

Exception:
System.ApplicationException: El método de sincronización del objeto se ha llamado desde un bloque de códigos sin sincronizar.
en System.Threading.Mutex.ReleaseMutex()
en System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
en System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

Environment:
Microsoft Windows NT 6.2.9200.0

Environment variables:
COMPUTERNAME=WIN-PV7GN5MGIF2
USERPROFILE=C:\Users\Administrador
HOMEPATH=\Users\Administrador
LOCALAPPDATA=C:\Users\Administrador\AppData\Local
PSModulePath=%ProgramFiles%\WindowsPowerShell\Modules;C:\Windows\system32\WindowsPowerShell\v1.0\Modules;C:\Program Files (x86)\Microsoft SQL Server\140\Tools\PowerShell\Modules
PROCESSOR_ARCHITECTURE=AMD64
Path=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\130\Tools\Binn;C:\Program Files (x86)\Microsoft SQL Server\140\Tools\Binn;C:\Program Files\Microsoft SQL Server\140\Tools\Binn;C:\Program Files\Microsoft SQL Server\140\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\140\DTS\Binn;C:\Program Files (x86)\Microsoft SQL Server\Client SDK\ODBC\130\Tools\Binn;C:\Program Files (x86)\Microsoft SQL Server\140\Tools\Binn\ManagementStudio;C:\Program Files\Microsoft SQL Server\120\Tools\Binn;C:\Program Files\Common Files\Autodesk Shared;C:\Program Files\Git\cmd;C:\Program Files\dotnet;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files\nodejs;C:\Users\Administrador\AppData\Local\Microsoft\WindowsApps;C:\Users\Administrador\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\Administrador\AppData\Roaming\npm
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
ProgramFiles(x86)=C:\Program Files (x86)
PROCESSOR_LEVEL=6
LOGONSERVER=\WIN-PV7GN5MGIF2
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
HOMEDRIVE=C:
SystemRoot=C:\Windows
SESSIONNAME=Console
ALLUSERSPROFILE=C:\ProgramData
PUBLIC=C:\Users\Public
APPDATA=C:\Users\Administrador\AppData\Roaming
PROCESSOR_REVISION=9e09
USERNAME=Administrador
CommonProgramW6432=C:\Program Files\Common Files
CommonProgramFiles=C:\Program Files\Common Files
OS=Windows_NT
USERDOMAIN_ROAMINGPROFILE=WIN-PV7GN5MGIF2
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 158 Stepping 9, GenuineIntel
ComSpec=C:\Windows\system32\cmd.exe
SystemDrive=C:
TEMP=C:\Users\ADMINI~1\AppData\Local\Temp\1
ProgramFiles=C:\Program Files
NUMBER_OF_PROCESSORS=8
SESSIONID=1
TMP=C:\Users\ADMINI~1\AppData\Local\Temp\1
ProgramData=C:\ProgramData
ProgramW6432=C:\Program Files
ADSK_CLM_WPAD_PROXY_CHECK=FALSE
USERDOMAIN=WIN-PV7GN5MGIF2
windir=C:\Windows

It appears in a form and you have to click on the "close" button so that the system can follow.

We also have the plus version where this problem has never appeared before.

The question is: Is there any method for PdfCreator to retry or omit the error? Is this error controlled with the Plus version?

Thank you.

Hi,
It's hard to troubleshoot old versions like 2.2.1.
Kindly try PDFCreator 3.3.2: https://download.pdfforge.org/