Installation Error code -6 occurs if the Installer cannot copy the Print Processor DLL file to the c:\Windows\System32\spool\prtprocs\x64\ folder.
Error message on the Error window:
“Error in BiInstallSinglePrinterPackage: -6
The specified Print Processor DLL (BuPProNT.dll) does not exist.”
The most likely cause of the problem is a virus scanner locking the printer driver component.