Fyi, this was once again fixed by restarting my PC a couple times and eventually it worked.
I did some testing into this and it appears to be related to the automatic closing process of an update. It is not properly closing Launchbox or something of that nature, despite not being in the system tray or running, there will still be a singular launchbox buried deep in my Task Manager that isn't using any resources, for some reason. The installer doesn't seem to actually fully close Launchbox essentially, resulting in errors. This is my guess, anyway, as doing a fresh restart of my computer where launchbox is never opened first is the only way I've fixed the issue before and now. Maybe some useful info to give to the dev team for recreating the issue?