Game doesn't get beyond profile page

I installed the game, it starts, and opens profile creation page. put in info and click create, error comes up "Can't create profile. Please select your connection type. if you are unsure what to select, choose modem."
This is my autoexec.cfg file
seta r_mode-1
seta r_customwidth "1920"
seta r_customheight "1080"
seta r_customaspect 1
seta r_primitives "2"
seta com_maxfps 125
seta cl_wwwDownload "1"
seta cg_fov "105"
autoexec.cfg file does not seem to load, resolution defaults to 800 x 600
Any help would be much appreciated