@airdream Thank you for the reply. I managed to solve the problem, installed again.
But I have another one: I added NAOMI and PS2 myself, copying an existing folder (psx) and changing de name of the folder and some of the images. But I cant do the same for the DOS folder. It doesnt recognize the folder (name= dos). I dont know what to do. Im using Legacy Clear theme.
This are the ps2 and naomi emulators I did, i can upload if you like them