Instead of the location mentioned above, go to. If you have mods installed, then somehow the version number in your mod folder is too low.
Increase the version number inside by one, save, and try loading your save again. If you had mods installed and removed them (which can be necessary for certain parts of the game, such as DLC areas), you need to go to Program Files > Origin Games > Dragon Age Inquisition > Update > Patch and open the package.mft file within using notepad.
