SourceForge PDFCrator Setup Problem

I am trying to create a setup for SourceForge PDFCrator using Inno Setup and getting following error in Setuplog.txt

Printerdriver-Directory (Environment: Windows 4.0): Result: Success = C:\WINDOWS\System32\spool\DRIVERS\WIN40 Printerdriver-Directory (Environment: Windows NT x86): Result: Success = C:\WINDOWS\System32\spool\DRIVERS\W32X86 InstallMonitor: Monitorname : PDFCreator Environment : Windows NT x86 Result: Error 193 = %1 is not a valid Win32 application Install printerport: Portname : PDF_Creator: Result: Success Install printerdriver for Win2kXP2k3 (32bit): Drivername : PDFCreator Environment : Windows NT x86 Result: Success InstallPrinter: Printername: PDFCreator Drivername : PDFCreator Portname : PDF_Creator: Result: Error 1796 = The specified port is unknown

What might be the reason?