You can try playing the game from a different OSX user account, and see if that makes a difference.
The save editor will work, if you can't get the saves to show up with creating / renaming profiles and moving save folders.
Once MooseEdit is setup under Wine and configured with the paths to the ~/Documents/.../PlayerProfiles folder and the Data folder in the game's install folder, it will list all the profiles and saves in a column. After each play session, if you select the latest save, and click the Load button, then click on the 'Extract all from LSV' button at the top left (open box icon), next to the 'Save all changes' button (3.5" floppy disk icon), that save will then show up in the game (since the problem is related to the compressed save format).
That problem in multi-player can generally be fixed by the host reloading the save (possibly multiple times).
