[color:"orange"]Is there a way that you can somehow edit the save game .tmp file to make it active again??[/color]
The .tmp save is a temporary folder that the games saves files to before copying to a folder without the tmp extension. This is to prevent a working save from being damaged if there is a problem during the save process (if you are overwriting an existing save).
Your chances of fixing a .tmp save would depend where exactly in the save process the problem occurred. In Windows Explorer, browse to the '..\Beyond Divinity\savegames' folder, and compare the number of files in the .tmp folder to saves from a similar point in the game. Depending on the file, missing files might be replaceable with corresponding ones from the next most recent working save, though this might cause other problems.