Seamonkey browser install from this url:
http://distro.ibiblio.org/slitaz/packages/5.0/seamonkey-official-2.53.1.tazpkg
all declared good install, listed in menu under Internet. Click to start, mouse wait icon appears, then is gone. Seamonkey installed to /opt/seamonkey. Go to terminal as root, to the seamonkey directory. There are executables: seamonkey and seamonkey-bin, also run-mozilla.sh. View the .sh file, paths are /mozilla-bin and executable mozilla-bin. From terminal execute: seamonkey, seamonkey-bin and run-mozilla.
Error message: file not found for all three, yet are listed in directory. The other Seamonkey in Package listed is 2.7, which is quite old.