I am able to use DOSBox Pure from RetroArch and play games with no issues. However, when I attempt to boot DOS games from Hyperspin, I get a frozen black screen.
The top of my Hyperspin settings ini file is below. My feeling is that the exe or parameters line is incorrect. (My rompath is 100% correct)
Apologies if this is too Hyperspin-specific, but their forums are down at the moment. Thanks for your help!

[exe info]
path=H:\hyperspin\emulators\Microsoft MS-DOS\
rompath=Roms/Microsoft MS-DOS/roms/
userompath=true
exe=com.retroarch/com.retroarch.browser.retroactivity.RetroActivityFuture
romextension=zip,7z
parameters=cores/dosbox_pure_libretro.so
searchsubfolders=false
pcgame=false
winstate=HIDDEN
hyperlaunch=true