Hello all;
I have discovered the Lakka system last week after googling a lot. Incredible system to play my old games 
I am running Lakka on a Banana Pi, and using a PS3 controller to navigate and play. Sofar, I have had some problems, which I have been unable to solve reading the documentation:
1.- I can not scan directories with roms. I have tested SNES and after scanning a new menu does not appear. I know Arcade ROMS are not supported to indexing, but the others should. Can I mix roms from different systems in the same roms directory? 2.- The cores are provided by default with the Lakka installation or do I have to load the separately?
and finally and the most important issue:
3.- I want lakka to play arcade games. I have downloaded Metal Slug in FBA version, and also I have another ZIP, but when I try to load the file, the system tries to load it, there is a black screen for 1 or 2 seconds and returns to initial menu again, informing tha the PS3 controller is plugged. I can not load FBA roms. Could anyone give me a clue?
Thank you all in advance,
Alberto