I seem to be having a problem uploading my roms. I have tried the front end loader, going through my pi desktop, file explorer and even ftp. I have tried filezilla and classic ftp and both keep giving me errors. I tried to change my folders to "777" through both programs and most folders would change but then i still seemed to get an error with each folder. When i try to transfer them on the raspberry pi desktop it tells me that i don't have permission and i try to change that and it still doesn't work. nothing seems to work for me to transfer my roms. Ive tried different roms and none work. Really have been trying to get metal slug to work but even nes roms won't work. I have been able to get them to work when using the retropie image. For some reason when it comes to adding them to my emulators in pimame they won't transfer. Any help would be appreciated.