With unable to set video mode, make sure to set a resolution that matches your desktop reso - Go to Client Options > Display and set your game reso there.
My resolution is set to 1600x900 in client, wich is the resolution of my laptop monitor.
The game only runs when I select TS-DDRAW, but thats laggy like ****.
IE-DDRAW and default don't work and give the "Unable to set the video mode" message.
Any suggestions?