Actually I am unable to use any wrapper:

lifter@lifter-VirtualBox:/var/www/projects/test$ httrack -Z --wrapper
/usr/local/lib/httrack/libcontentfilter.so.1.0.0  <http://example.org>
* option %W : unable to plug the module
/usr/local/lib/httrack/libcontentfilter.so.1.0.0 (returncode != 1)
lifter@lifter-VirtualBox:/var/www/projects/test$ mc

lifter@lifter-VirtualBox:/var/www/projects/test$ httrack -Z --wrapper
/usr/local/lib/httrack/libdisplayheader.so.1.0.0  <http://example.org>
* option %W : unable to plug the module
/usr/local/lib/httrack/libdisplayheader.so.1.0.0 (returncode != 1)