@MaximStroud Have you tried adding the bios files and boot it that way ? Can you provide the log file (/dev/shm/runcommand.log) taken after starting the game ? What other games have you tried running ?
Does Reicast even work on the retropie? What are the original names for the bios and flash files? Is there a best way to copy the files over, I just copied them in Ubuntu?
I got ecco the dolphin to work but not sonic
if you got ecco to work, then its almost definitely a problem with the sonic files, the bios is fine.
@cash513 The image is to stretched to recognize the program that gives you this error. However, it seems the file is an .img file and this is the file that you can use with Win32DiskImager.
Start Win32DiskImager, choose your sd card partition and then browse to the folder where this file is stored and choose this file to be written to the sd card.
@theimmortal Please don't spam the forum just because you didn't get a reply within 5 minutes. Plus you should maybe provide some of the information requested as to your set up and the emulator you are using.
Edit: Don't bother, no one is going to help you with that attitude.