it us strongly recommended to upgrade to ggts-3.6.3. I tried to do so and installed
groovy-grails-tool-suite-3.6.3.RELEASE-e4.4.1-linux-gtk-x86_64.tar.gz
When I try to create a project via new, project, after entering the projectName ggts-3.6.3 vanishes from the screen without any message.
peter