I have no other issues with my PC, Hyperspin or MAME. My computer is a brand-new build, with nothing but Win7 64-bit installed (no other apps except what came with the machine, Chrome, XPadder, Hyperspin and MAME). I have used both ROM and CHD files that are compatible with build 146, as evidenced by the fact that I have three other machines using these exact same files just fine (and they also come from a reputable source who updates files regularly and has never given me a bad dump).

I've removed the contents of the DIFF folder (though on my most recent re-install of MAME from the MAME downloads site, I don't have a DIFF folder). I have copied the CHD and zip files of these games from another computer that runs these games perfectly. I have copied MAME over from another computer that runs these games perfectly. I've tried everything I could find online (yes, Google is my friend), as well as several other tricks, and nothing has allowed CHD games to play. I've installed MAME version 146 on four computers now, but on the last one (a small, low-power nettop), I'm getting a 'DIFF CHD ERROR: File Not Found' code on ONLY my games that require CHD files (all other games play fine):įollowed by a 'ERROR: Required files are missing, the game cannot be run.' message: Now that you know I'm not a complete noob (wink), I wanted to ask for some help with something that has stumped me recently.

My first cabinet using MAME/Hyperspin (that I built for my co-workers), looks like this and has amplified audio, dual powered subwoofers (that's why the base is so large-proper air volume), a Wii behind the coin door, and a few other tricks: new to the forum, but not to building arcade cabs.

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