How can I get this thing working? It keeps crashing everytime I start a rom. I'm not familar with MAME and I have saw it requires some kind of parent ROM. Any help would be a appreciated.

Hello everyone! I downloaded a copy of the 20th Anniversary Playstation theme from the PSN store and ripped it to my PC. I don't really know much about how to make themes but comparing the files I got and the files from a custom theme, I believe we have all the icons and even the at9 file. So, is it...