The 2 most common causes of this problem are either a video card conflict or a corrupt font. Please go to the following directory:
C:\Program Files\Electric Rain\Swift 3D\Version X.XX\Program
and take a look at the Swift 3D Initialization.txt file. If the file has stopped at the Font Loading line, then you have a corrupt font on your system that you will need to identify and remove. The best way to identify corrupt fonts is through a font management program like Adobe Type Manager.
If the file completes, or is stuck at any other “loading” line, then the problem is most likely a video card conflict. This can be resolved by downloading the latest driver for your video card from the manufacturer’s web site.