Well i wanted to open the editor today to progress on my route but it didnt want to open this it what it always shows.
what does it say? hmm... "this can occur if the game has not been launched after an update" oh my my... sounds like you may want to do exactly that, duh.
Ok it might be obvious for you but could you then tell me how to install it because in the epic launcher it just says "Start" not "Update"...
You need to install nothing anymore. The update for the Editor already happened. But everytime the Editor has been updated, you need to run TSW4 (the game, not the Editor) once to validate the connection between the game and the Editor and the Installation files.