d3m0n1us: I started the game before the DLC was released and everything was fine then. After the game was updated to 1.7 with the Fatesworn DLC my old save files were not found with me only having the option to start with New game
I seem to have found a solution that works, at least for me...
1 - back up save files
(there are two folders in C:\Users\(username)\AppData\LocalLow, one is called THQOnline and one is called THQNordic... in my case my old save files were accurate in the "THQOnline" subfolder but there were nothing but a couple new entries dated today in "THQNordic" but I'd already run the game and gotten this error, so others who haven't run the game with the DLC yet may be able to just back up their save files from the "THQNordic" location)
2 - open Galaxy and TURN OFF CLOUD SAVING for the game
3 - close Galaxy
4 - open the above mentioned "THQNordic" local save subfolder and delete everything, then copy / paste your saves you backed up previously
5 - Run the game (I personally did this without opening Galaxy again) and see if you now have the options "Continue" and "Load Game"
***I don't know if cloud saves can be turned back on at this point or not... I'll experiment and see, just wanted to share a potential solution until this is (hopefully) fixed in a patch