Windows 8 driver install and catalog/signature validation

I can't get windows 8 (release preview) to accept either the inf2cat or makecat approach described as solutions to the question at What changed in the driver signature requirements for Windows 8? unless I disable validation. I am not signing these with any certificates at this point, just trying to get past the errors preventing the drivers from installing at all. Windows 8 gives me a very nondescript error: "A problem was encountered while attempting to add the driver to the store." Looking in the event logs, there is nothing of use; only an informational entry from "Windows Error Reporting" indicating a PnPdriverimporterror. When i use my original files with the cab files that don't match the inf, I get the error everyone else is listing: The hash for the file is not present in the specified catalog file. I have one `.inf` file that i need to generate a `.cat` for. Perhaps I am doing something wrong. Ideas?? INF2CAT Approach ``` c:\win_xp_vista32_64>inf2cat /driver:"." /os:XP_X86,XP_x64,Vista_X86,Vista_x64,7_X86,7_X64,8_X86,8_X64 ....................... Signability test complete. Errors: None Warnings: 22.9.10: usbser.sys in [drivercopyfiles.nt] is missing from [SourceDisksFiles] s ection in \mchpcdc.inf; ok if file source is provided via LayoutFile in [Version ]. 22.9.10: %driverfilename%.sys in [drivercopyfiles.ntamd64] is missing from [Sour ceDisksFiles] section in \mchpcdc.inf; ok if file source is provided via LayoutF ile in [Version]. Catalog generation complete. c:\win_xp_vista32_64\mchpcdc.cat ``` MAKECAT approach ``` --- start of catalog.cdf file--- [CatalogHeader] Name=mchpcdc.cat ResultDir=.\ [CatalogFiles] <hash>mchpcdc=.\mchpcdc.inf ---end of .cdf file --- c:\win_xp_vista32_64>makecat catalog.cdf ``` These same files, w/ the cat from either approach install just fine in Windows 7.