There are no additional components. That's definitely a strange problem. A couple things to try. First and most obvious, try a complete uninstall and reinstall. If that doesn't work, make sure you have the absolute latest version of your graphics card driver. Then try reducing acceleration in the graphics card driver settings. You can also try disabling Data Execution Prevention in advanced system settings, or just add Terragen 2 (tgd.exe) to the exception list. running tgdcli.exe, from the installation directory of TG2 might also give you more information on the crash. Let us know if any of that helps.
- Oshyan