Just tested and all it needs is one match to at least display the details (i.e. By Name, By Category, By Manufacturer, By Year, Biography, etc.) So if your not seeing that then you don't have any matches. Please, in detail, tell me what exactly you've tried as it works and only took a few seconds on my end to get it going. I personally would test on another emulator where your roms are using a known naming convention, just for testing purposes. Then you can see what the databases should be showing. And if those work then it's obvious it's a naming issue with the Sony Playstation database.