Try right clicking on the game window, go to "settings" and then another small white window should pop up. In that white window to go the "Folder" tab and change it so that your local storage is unlimited.
Slightly different issue in the same vein. I've taken quite a liking to a game called "Magi: The Fallen World". I have no problem picking up from where I left off on the same machine. If I wanted to play the game on a different machine...it's from scratch. Is there any way to remedy this? I've noted that another game I play (Tower defense style) stores data on the server under my profile.
@ganman: you need to transfer the game data file from a computer to another. The location of the files depends on your operating system, but you can look in here to get the correct one. Then copy it on a USB drive or store it somewhere online, and save it into the original place in the other computer.