I use Eclipse 4.7 (Oxygen), portable version
Firstly, sorry for my english.
I was having the same problem as the guillaume girod-vitouchkina. I could not create a new Gluon project. I was using Eclipse Neon.2 and update for Eclipse Neon.3 and the problem persisted. So I did what uBreckner recommended and it worked! I uinstall version 2.x of Buildships Gradle and install latest 1.x version.
Thanks guys,
Regards!