Mac 10.9.5

2.3 Ghz Intel Core 7

16G 1333 Mhz DDR3

After every game, using the game through steam, the game returns to the main menu, only it does not display the options.  

The music plays and you wait and wait and nothing happens.   I have to quit the game, and restart to get anything going again.   This also happens on multi-player.

Another issue is that if I am bought out in a multi player game, the game also locks up.   I can still see the game, and for a period even hear what is going on, but cannot click anything.   

One suggestion about the mining button, please make it a bit more different than the steel mill.    Often they are confused and we end up clicking the mine instead of the steel mill.

The game is amazing, please keep up the good work!