bug when clicking "continue" on the main menu

When I click "continue" after opening CaesarIA to resume my last game, the screen flashes and comes back directly to the same menu, not launching the last game. I'm using the last build on Mac OS 10.9.5
Here is the extract from the Console/
07/06/15 11:44:37.281 caesaria.macos[3448]: objc[3448]: Class SDLAppDelegate is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.281 caesaria.macos[3448]: objc[3448]: Class SDLTranslatorResponder is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.281 caesaria.macos[3448]: objc[3448]: Class SDLMessageBoxPresenter is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.282 caesaria.macos[3448]: objc[3448]: Class SDLOpenGLContext is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.282 caesaria.macos[3448]: objc[3448]: Class Cocoa_WindowListener is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.282 caesaria.macos[3448]: objc[3448]: Class SDLWindow is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.282 caesaria.macos[3448]: objc[3448]: Class SDLView is implemented in both /Users/~/Library/Application Support/Steam/steamapps/common/CaesarIA/caesaria.macos and /Users/~/Library/Application Support/Steam/SteamApps/common/CaesarIA/caesaria.macos. One of the two will be used. Which one is undefined.
07/06/15 11:44:37.656 WindowServer[94]: Received display connect changed for display 0x42803c2
07/06/15 11:44:37.679 WindowServer[94]: Found 54 modes for display 0x042803c2 [54, 0]
07/06/15 11:44:37.705 WindowServer[94]: Received display connect changed for display 0x3f003f
07/06/15 11:44:37.705 WindowServer[94]: Found 1 modes for display 0x003f003f [1, 0]
07/06/15 11:44:37.706 WindowServer[94]: Received display connect changed for display 0x3f0040
07/06/15 11:44:37.706 WindowServer[94]: Found 1 modes for display 0x003f0040 [1, 0]
07/06/15 11:44:37.706 WindowServer[94]: Received display connect changed for display 0x3f0041
07/06/15 11:44:37.706 WindowServer[94]: Found 1 modes for display 0x003f0041 [1, 0]
07/06/15 11:44:37.718 WindowServer[94]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x042803c2 device: 0x7fcfb3911df0  isBackBuffered: 1 numComp: 3 numDisp: 3
07/06/15 11:44:37.803 WindowServer[94]: CGXMuxAcknowledge: Posting glitchless acknowledge
07/06/15 11:44:37.864 WindowServer[94]: Received display connect changed for display 0x42803c2
07/06/15 11:44:37.864 WindowServer[94]: Found 1 modes for display 0x042803c2 [1, 0]
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