Freemarker released version 2.3.17 a few days ago and 2.3.18 in May 21. It has been more than a year since version 2.3.16. The old editor cannot be installed in the new version.
On eclipse and myeclipse, the latest official editor is still in the development stage. Some netizens seem to know the latest source code link location, but it must be unstable.
Another optional editor is the freemarker editor in JBoss tools. It is worth comforting to start myeclipse and enter myeclipse configuration center --> Software --> Add site, enter name: freemarker,
URL (corresponding to eclipse3.4): http://download.jboss.org/jbosstools/updates/stable/ganymede/
URL (corresponding to eclipse3.5): http://download.jboss.org/jbosstools/updates/stable/galileo/
URL (corresponding to eclipse3.6): http://download.jboss.org/jbosstools/updates/stable/helios/
URL (corresponding to eclipse3.7): http://download.jboss.org/jbosstools/updates/stable/indigo/
URL (corresponding to eclipse4.2): http://download.jboss.org/jbosstools/updates/stable/juno/
Then select freemarker ide under all JBoss tools. You don't need to worry about the rest, or the download time will not be affected. Then, confirm the installation!