There should be several ways to fix this but the best is to delete the most recent saved games found it both the <game location folder>\Stormside-v0.23.1.4-win\game\saves folder and duplicated in the users\<username>\AppData\Roaming\Renpy\Stormside-1640885091 folder. This way you will not loose every save but just the one you do not want. If this fails you may have to delete all the saves and start a new game. This should work.