If you have downloaded a 100% completion save file or are transferring data from another user, follow these steps to ensure the game recognizes the files:
The location of your save files depends on the specific crack or repack you are using. For the Skidrow version of the original Assassin's Creed 3, the most common paths are: Save Game Assassins Creed 3 Skidrow Crack
Corrupted saves are often caused by the game being closed abruptly or by antivirus software interfering with the crack files. Adding your game folder to the Windows Security Exclusions list can prevent this. If you have downloaded a 100% completion save