I can't start N64 retroarch cores from launchbox. Both Mupen64plus_next and Parallel N64 both fail to start. Both of the cores launch properly from within retroarch itself.
I tried troubleshooting with all the basic steps including: making sure cores are installed/updated, trying roms from different sources, both zipped and unzipped. I've even tried it on a completely new launchbox and retroarch installation and still nothing.
I'd really appreciate any advice anyone could offer. Thank you.