I installed the RetroPie Image on an Class 4 8 GB SanDisk SDHC card, and when i booted it on the raspberry pi, I resized the memory card and set the memory split to 192. I plugged the pi to Ethernet and installed some roms. All the roms showed up on the pi after a reboot but for some reason there was two versions of each rom, one with a ‘._’ prefix and one without. I tried opening every version of every rom, but it only showed a quick screen with lots of equal signs and then it sent me back to the menu. Does anyone have a solution?
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