@ci2own Yes i just checked there and there are no custom command line parameters assigned.. i just realized im having the exact same issue with the Nintendo Virtual boy it launches perfectly in the retroarch gui but not through launchbox the weird thing is i am 100 percent sure these systems were working before and all of a sudden they dont launch.. so i enabled debug mode to create a log and then launched a Vectrex game through launchbox then launched a virtual boy game and then i launched a working Gameboy game i thought maybe i could spot a fault but i know nothing about looking at logs for faults and so it was fruitless. but ill attach the log to see if anyone can make sense of it..thanks again i really appreciate all you guys trying to help what a great community 👍🙂
Debug 2025-02-05 09-41-39 AM.log