MAKEMKV 1.17.4
Macos 10.14.6
I've been using makemkv for years without an issue.
Now, I have those files from a bluray, wich I can't open in makemkv :

I noticed index.bdmv is located under BACKUP directory, not under BDMV directory as usual.
When i open the index.bdmv files, I got nothing but the message : failed to open disc.

Any idea ? Thx a lot for your help.