Hey have you has any feedback for this ??
Myself and my girlfriend have also encountered almost the same problem. I say almost as theres a few things different to yours... im going to put whats happening here.
The issue:
Year 3 autumn day 14 the error occurs when going to bed shortly before the end of day results. “The Software was closed because an error occurred”. Ive been experimenting slightly with the game to find out if there was a cause.
The first time it happened we had just purchased the teleport sceptre thing and just needed the iridium for the boat requisites. And after a fruitful day in the skull mines got into bed then crash...
Second time we tried without buying sceptre... crash
We kept changing things until we woke up and went straight to bed, alas still crash.
We have delayed our return to the valley while this error continues (i check almost daily for updates just in case). But we both want to farm again on this save rather than start a new one.
Error text:
"The software experienced an error and had to close."
Game Version:
Switch 1.5.4 (Splitscreen 2 players)
Language:
English