Thank you Karsten

A new experience:
About a half hour after trying the download, doing some Math google searches, my speaker started a noxious pulse beeping, one webpage screen went red, with some warning to call an alleged "Microsoft" telephone number, some blocked malware was after bank accounts and credit cards, etc.
(No fault of MoI, nor of MediaFire as far as I know.)
Rebooted, and all seems well.

- Brian