Here's a good question

When I download some .blend files, and load it up in Blender, that’s when my program tells me “This program has performed an illegal operation, and will terminate.”

What is that all about? Are the .blend files I downloaded inconsistent with with latest version of it? I have Blender 2.23 if that matters.

Hello WDude
I guess that it’s not a problem of version but that the .b files are
corrupted
António