Pulse Shift has been updated to 1.4.0.
Save files from 1.3.1 are no longer supported in new version because of several game changes as DLC integration in to main game. It is recommended to use clean installation or remove all files from "Profile" folder and "Controls.config" from "Config" folder. All in UserSettings.
In any case 1.3.1 will be still available.
Changes can by found here :
PS : We are still working on Steam version do not worry :)
3 Core Studio.