RESULTS OF DEBUG ACTIVITY.

With the scan rule -*.JPG +*.Big.JPG, the following occurs:
For both the files 0001.JPG and 0001.Big.JPG, debug 
reports the following:
"(wizard) explicit forbidden link"
and neither file is written to the output.

With the scan rule -*.JPG +*.Big.JPG -*.GIF, the following 
occurs:
For file 0001.JPG, debug reports:
(wizard) explicit forbidden link
For file 0001.Big.JPG, debug reports:
(wizard) explicit authorized link
and only 0001.Big.JPG is written.

I can no longer reproduce the behavior I reported yesterday. 
That is, HTTrack downloading does not seem to depend on 
the number of URLs. Rather, it seems to depend on the 
presence or absence of something after the include 
statement (in this case, the -*.GIF phrase).

Using the scan rule -*.jpg +*.Big.JPG -*.GIF everything works 
consistently. Without the trailing -*.GIF, everything fails 
consistently.