Cubase doesn't read his own offline processed files 9.5.10

I have just opened the project I finished yesterday and moved to another drive.
And Cubase says some files are missing despite they does exist in the “Edit” folder.
When I tried to locate them, Cubase says “Error: Invalid or unsupported file

Also I tried to convert them, with ffmpeg and Audacity (I thought maybe they are damaged) but Cubase still doesn’t want to accept them.

What is going on? Never faced this problem before.


Make sure you have the very latest Cubase 9.5.30 installed, please.