Few days ago I wrote an article about how to Install Eclipse on RHEL (https://philipp-boss.de/it/linux/how-to-install-svn-eclipse-on-redhat-6-3-rhel-6/)
After I installed some plugins I noticed, that they are not working with the „standard“ user. When installing the plugins as root they worked well.
I found a very good explanation on the Google GWT Plugin Page:
To avoid any problems with the installation and update of plugins, you should directly after you extracted the eclipse*.tar change the owner via:
sudo chown -R <user> eclipe
After I changed the owner to my current user, the installation and updates of my plugins worked perfectly fine.
I hope this tip can also help you 😉