Thanks - it was originally on the computer with Windows 8.1 (64-bit) before the W10 upgrade.

Thanks for the response - I'll double-check that. As I recall, it was running the 64-bit version of the "fix". ;)

I've been using Microsoft Photo Editor for the last 20 years, on literally dozens of computers - needed outside help (from the 7 Forum) for a fix 4-5 years ago, looks like I need it again from the...