There a .txt file in the game directory that explains what to do in case you can't load your save file, it looks messy here so i suggest checking it yourself
"There's a bug I haven't been able to recreate enough to solveWhen loading a savefile there's a chance the loading won't progressYou'll hear a RPG Maker error sound and the gamescreen will remain darkTo fix it press the [Cancel] Key, by default the [X] KeyStart a new game, and as soon as the option to return to title it's available click itAfter that it should allow you to load your savefile"