I keep getting a error message saying unable to save file. Please help

Hi there, I'm sorry to hear that you're unable to save your game. Before I suggest any troubleshooting steps, I just want to check with you what you've tried so far. One common error is OneDrive blocking the saves as it manages the Documents folder, which is the usual save location for many games. To rule that out, you can try pausing OneDrive and check if the game saves correctly. 

Let us know how that goes,