> While the Httrack is working, I see tmp files in
> every folders.
tmp files are binary files for internal processing with information of links
to be done. Once the link is processed the tmp is deleted.

> But after processing the folders are empty, the tmp
> files are missing, and html files are nowhere. I
Look in the log file. Perhaps those files has authorization problems.

Always post the command line used (or log file line two)