aolney

Here is the current home for the project: https://olney.ai/category/2009/09/01/gnututor-overview.html You are more than welcome to use GnuTutor for any project. However, you should know that as 10-year old code, it no longer runs readily on Windows. It can run with some help that I outline in the link above. Also, it was an experiment in dialogue management using Prolog. I've found this to be a nontrivial barrier for some users. No other AutoTutor system before or after GnuTutor has used Prolog this...

The image you sent gives the specific error message -- the prolog file has a statement...