If what Deathbud suggested doesn't work try the link that Mookie gave on a previous post. That's what I had to do and once installed just open the 4th Saga icon instead of T4C, worked for me.!!! Hope to see you soon Ouranos!!!
Try downloading this:
http://4thsaga.com/4ge-1.6-Manual.zipand extracting it to the folder where you installed t4c (usually "Program Files\Dialsoft\The 4th Coming" or "Program Files\The 4th Coming")