We came across a problem with 1.5 that caused certain video cards to display the game incorrectly. We are working on a hotfix for this issue, but in the meantime would like to provide you with a workaround if you are experiencing this issue.
The best workaround is to run the client in windowed mode. If you can’t get into the game to do this from the options screen, you can manually edit the client.cfg.
To edit the client.cfg file, make sure Tabula Rasa isn’t running. Go to the install directory (default is C:\Program Files\NCsoft\Tabula Rasa). Open the “client.cfg” file in Word Pad or your favorite text file editor. Find the following line and be sure to set its value to “False”:
Client.Graphics.FullScreen = False
Advanced Users Only: If you absolutely must play in full screen, you can try setting your windowed and full screen resolutions to be identical values in the client.cfg file. Note however, that not all supported resolutions will work. Also, if you do this, you can not resize the game window during windowed play, or you will break full screen mode again. These are the lines to edit in your client.cfg file (the commas in the numerical values are optional):
Client.Graphics.FullScreenResolution = "1024x768"
Client.Graphics.FullScreenResolution.Height = 768
Client.Graphics.FullScreenResolution.Width = 1,024
Client.Graphics.WindowedResolution = "1024x768"
Client.Graphics.WindowedResolution.Height = 768
Client.Graphics.WindowedResolution.Width = 1,024
Thank you for your patience with this issue, we hope to have this resolved as soon as we can.