Also in the %LOCALAPPDATA% there isn't a SWTOR folder, there is only a swtor_performance application
As a test create a new windows administrator account on that windows install and see if playing the game in that windows user account also has the same issue.
when i press the windows key and paste %LOCALAPPDATA%\SWTOR\swtor\ i get the below folders, which if you go into the settings folder contains the client_setting file as mentioned in this guide link , that location is meant to be created on the games first successful launch.
