I have an installation of 1.7.1 with the latest Beetle Saturn core update (today). I have the correct BIOS file in the in the System folder and all works perfectly.
However, I installed 1.7.3 (taken from the Download page) and copied over my System folder containing my BIOS files but no Saturn game loads. All I get is the “Failed to Load Contents” message.
I loaded the core to check that the BIOS file was being recognised and I found that it was. Just to be safe, I put in a fresh BIOS file, checked that RA recognised it and tried to again. Still, no game will load.
My install of 1.7.1 still works fine. Both 1.7.1 and 1.7.3 are installed on my C:\ drive. All other cores seem to work fine.
I’m on Windows 10 x64 Pro.