If you are running Sonic & SEGA All-Stars Racing through RPCS3 instead of native PS3 hardware, specific configuration adjustments are required:
Create a new folder on the root of the USB drive named exactly exdata (lowercase). Move the .rap file inside this exdata folder. Step 3: Install the PKG on PS3 sonic and sega all stars racing ps3 pkg fix
This report is based on a compilation of user reports and online forums. While efforts were made to verify the information, the accuracy and completeness of the report cannot be guaranteed. If you are running Sonic & SEGA All-Stars
Use official support resources: