No printers installed

Hi,
i have a similar problem installing version 2.3 on Windows 2008 R2 (standard version, not server)

Running the printerhelper, gives me the following error:

C:\Program Files\PDFCreator>printerhelper /installprinter “PDFCreator” /portapplication “C:\Program Files\PDFCreator\PDF
Creator.exe”

Error:
Message = The specified module could not be found
Source = PrinterHelper
StackTrace = at pdfforge.PrinterHelper.Win32Printer.AddPdfcreatorPrinterMonitor(PrinterEnvironment printerEnvironment, String monitorName, String portName, String monitorDriverFileName, String programFullFileName, Boolean server)
at pdfforge.PrinterHelper.Printer.InstallPrinter(IList1 printerNames, IWin32Printer win32Printer, String monitorName, String portName, String portApplication, String driverName, String externalPpdFile, Boolean server, ILogging logging) at pdfforge.PrinterHelper.Commands.CheckCommandInstallPrinterAndExecute(IDictionary2 cmdlParams, IWin32Printer win32Printer, String monitorName, String portName, String driverName, ILogging logging)
at pdfforge.PrinterHelper.Program.Run(IDictionary`2 cmdlParams, ICommands commands, IWin32Printer win32Printer, ILogging logging)
at pdfforge.PrinterHelper.Program.Main(String[] args)
TargetSite = Void AddPdfcreatorPrinterMonitor(pdfforge.PrinterHelper.PrinterEnvironment, System.String, System.String,System.String, System.String, Boolean)

Please, could you help me to understand the problem?

Thanks
Diego