Got a few games that fail to start. I get a black screen with an exclamation mark in a square box and underneath that the text:
Could not start the software.
Please try again from the HOME Menu.
In this case it's The Legend of Heroes: Trails from Zero and The Legend of Heroes: Trails to Azure that do so for me. I updated them to the latest versions, which should require firmware 22.5.0. My Switch runs firmware 22.5.0 along with the corresponding Atmosphere version, sigpatches, etc. As far as I can tell, the files are not corrupt at all; NxFileViewer reports their state is original.
Why does this error show up? And how can I fix it? Not just for these games, but in general if this shows up for any game.