Eeey-ore

My Installer (Big World Project v. 9.10) stalls upon the BGI check. It lists 26 ".wav" files and tells me to load them to my Override folder from a BGI CD. I can't find them on any of my BGI or TotSC CDs. They are:
ERROR01 through ERROR18,INTRO01, INTRO01F, INTRO02, INTRO02F, INTRO03, INTROADD, TSCNA01, and Tscna02.
I have tried three clean installs of BGI/TotSC/BGTalesUS5512 and have encountered this each time.
The BWP Installer asks if BG I is completely installed. If I try to force the "Y" (Yes) answer, the installer closes itself.
Does anyone have any ideas as to what I can do to complete BGI or recover?
N.B. I have used previous versions of BWP Installer quite successfully in the past.