Unable to save game on Dungeon Keeper

I am having the same issue. Does anyone have any suggestions? 

Figured it out!!:

Ensure you download KeeperFX: 

https://keeperfx.net/

Right click the KeeperFX and run as Administrator. Click "Yes" on the popup. Click the Folder icon button, ensure there is a folder named "save" is present. If not, create folder and name it "save". Close file explorer and click giant red "play" button.  Let game load or click through opening cinematics. New buttons will appear but do not worry, play with them whenever. Click on "Start New Game" (or "Continue Game" if available) Let the game load. Get to a good point before saving. Press the "esc" key and save the game ALWAYS NAME YOUR SAVES! When you want to play again, load the game with the above steps and this time, when you load in, it will be a new game, just press the "esc" key and click the far leftmost button to load, Click your save and it will load where you last saved.

Hope this helps!!