From Finder, click on the "Go" menu and select "Go to Folder..."
Type "~/Library/Preferences/SPORE Preferences/" without the quotes and hit enter
double click on the file named "config"
Within the config file, change "flobackbuffer" = "0" to "flobackbuffer" = "1"
Close the file and restart the game. It should work now. Only took me six months to figure out how to find the config file...
Thank you for helping me fix this! I had the exact same problem when I downloaded OS X Mountain Lion. Now my game is (somewhat) back to normal. Thanks!
