hey all I am trying to get my Ipac2 with buttons to work with my retropie emulators. It is working great with any mame games however when I try to use anything else it wont work. I thought I could go into the cd /opt/retropie/configs/all then nano retro arch.cfg the fisrt time I managed to go into the file and see the key mapping I did not make any changes, my keyboard was not responding so I unpluged my Pi and then the next time I went into the same location EVERYthing in the file is gone. What did I do, how can I fix it.
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