EDIT: i also figured it out! it is a --retroarch with a space at the end of the command line
Can you tell us how you did it ? i have the same Problem, i want to start some german language games (pal-version) with retroarch and a --retroarch in the command line dont work
all other consol games...
Sorry if this was asked before does it work on ubuntu ? the programm starts with wine but i cant istall the drivers
thx a lot for sharing all your work with us !
Gr33tZ