I am trying to migrate a 32 bit vista printer driver over to a 64 bit Windows 7 environment. I have loaded WDK and set up a x64 environment on a PC running a 32 bit version of XP with SP2. I am using two .GPD files that specify the printer parameters from the Vista driver. I have modified my INF file per the tests run by INFGATE. I have used INF2CAT to generate a .cat file for the files in my INF file. I digitally sign the CAT file and try to add/load the driver on a 64 bit PC. It detects that the files are signed and tries to load. After a delay, a message box pops up and says "Printer driver was not installed. Operation could not be completed (error 0x00000002). I am trying to use the resident unidrv minidriver with GPD files. There are numerous examples of minor tweaks I have tried without success. I have built the driver in both checked and free environments without success. Below is my INF file to show exactly what I am trying to do. It referrences a NTPRINT.inf and a Unidrv file, which I have made sure is in the driver path, but it still won't load. Is there a tool or some feature that I could turn on that would give me more details as to why I cannot load the driver ? Any help would be greatly appreciated. ; oemprinter ; w2v64.inf ; ; Copyright (c) 2010 OEM Craden Peripherals Corporation ; [Version] CatalogFile= craden.cat DriverVer=06/29/2010,01.00.00.02 Signature="$Windows NT$" Provider="Craden" ClassGUID={4D36E979-E325-11CE-BFC1-08002BE10318} Class=Printer ;[ClassInstall64.NTamd64] ;AddReg=printer_class_addreg ; ;[printer_class_addreg] ;HKR,,,,%PrinterClassName% ;HKR,,Icon,,"-4" ;HKR,,Installer64,,"ntprint.dll,ClassInstall64" ;HKR,,NoDisplayClass,,1 ;HKR,,EnumPropPages64,,"printui.dll,PrinterPropPageProvider" [Manufacturer] "Craden" = Craden, NTamd64 [Craden.NTamd64] "Craden DP9" = CrDP9.GPD,CradenCraden_DP9AEB0, LPTENUM\Craden_DP9 "Craden DP8" = CrDP8.GPD,CradenCraden_DP86E71, LPTENUM\Craden_DP8 [Craden] "Craden DP9" = CrDP9.GPD,CradenCraden_DP9AEB0, LPTENUM\Craden_DP9 "Craden DP8" = CrDP8.GPD,CradenCraden_DP86E71, LPTENUM\Craden_DP8 [CrDP9.GPD] CopyFiles=@CR24res.Dll,@CrDP9.GPD ;Resource DLL and GPD file DataSection=UNIDRV_DATA ;Unidrv Data Section DataFile=CrDP9.GPD ; Include=NTPRINT.inf ;Include NTPrint.inf Needs=UNIDRV_DATA ;Install Unidrv [CrDP8.GPD] CopyFiles=@CR24res.Dll,@CrDP8.GPD DataSection=UNIDRV_DATA DataFile=CrDP8.GPD Include=NTPRINT.inf Needs=UNIDRV_DATA ;;CoreDriverSection:"{D20EA372-DD35-4950-9ED8-A6335AFE79F0}",UNIDRV_DATA ;;[PrinterPackageIntallation.amd64] ;;PackageAware=True [DestinationDirs] DefaultDestDir=66000 [SourceDisksNames.amd64] 1 = %disk1%,,,"" [SourceDisksFiles] CR24res.Dll = 1 CrDP9.GPD = 1 CrDP8.GPD = 1 [Strings] PrinterClassName="Printers" CR="Craden" disk1="Win7Driver"

For such questions please discuss in the following forum. MSDN - Windows SDK ForumArthur Xie - MSFT