I did not try a test mirror of the site to see what would work but looking at
the log you posted you might try the following.

Try changing the browser ID to the first one in the list.

The log you posted shows that the browser ID being used currently is:

Mozilla/4.5 (compatible; HTTrack 3.0x; Windows 98)

Select the first one in the list which should be:

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)

If you should run into something in the log later on that mentions robot.txt,
you can set the option in Httrack to not follow the robot.txt.