BigBox won't launch after update (13.18)

[FormulaFox]

Hello. So, I just updated Launchbox on one of my arcade cabs to version 13.18, and now BigBox refuses to launch. Launchbox itself launches fine, but with BigBox the screen goes black for a few seconds, then back to desktop. BigBox is listed in the Task Manager after this point, but it doing nothing - it uses no CPU power, no disk, and a minute amount of memory. I have let it sit for ten minutes and nothing happens. Rebooting system has had no impact - it won't even properly launch on system startup like normal

I notice no other forum threads about this so I assume it must be an isolated incident not a widespread problem, so I suspect finding the cause won't be easy, but I have no idea where to start.

[AFK4LYF]

Ironically, I had the opposite problem after updating to 13.18. For me, Bigbox worked fine, but Launchbox refused to launch. I reverted back to 13.17 and everything started working normally again.