After defeating Edric and talking to the king, I exited the castle and got a dialog box with the title @ui_A1_Q5_S12_Popup_Title and the message @ui_A1_Q5_S12_Popup_Content

I assume these are pointers to some sort of string asset that didn't load properly. I have a screenshot if there is a way for me to post it or send it somewhere.

Also, after looking at my screenshot I noticed that I had a new step added to my quest tracker labeled @ui_A1_Q5_S12_StepNameLabel