Retroarch with PSX just keeps crashing

I’m looking at Core Information, and it shows that my BIOS (scph5501) is Present, I’ve checked the BIOS MD5 to be matching with Mednafen’s wiki page, and my game is FFIX which I’ve tested to be fully working with ePSXe. My game came as a .bin.ecm file, which I tried to use as is (this works with ePSXe), and when this didn’t work with RA, I tried renaming it, by removing the .ecm, so it’s just .bin files. No matter what I do, as soon as I try to launch the game, it just crashes right back to the opening screen of RA. Is this new version of RA just buggy? What else can I try? Thanks

ECM is a compressed format you need to uncompress with ECM Tools.

Ok thanks! I’ll try that now

that did the trick! thank you!