Not exactly OEM, but reputable nonetheless:
2 2008-06-17 15:59:11
Topic: [PROB] missing file in S/Y (5 replies, posted in DriverPack Sound)
The YAMAHA AC-XG drivers is missing the yacxgc.cpl file. It was commented out in the [SourceDisksFiles] section of the inf, but is referenced in another section, causing windows to prompt for it. I found the file from another source, please tell me where I can email it or upload it to.
Ben