I tried to perform a software update in Liferay Developer Studio, but the Liferay IDE update site is unreachable. The following error appears:
Unable to read repository at http://releases.liferay.com/tools/ide/latest/stable/.
http://releases.liferay.com/tools/ide/latest/stable/ is not a valid repository location.
I tried removing and re-adding the site and reloading its metadata. A similar error appears, however the class of the exception is now displayed : org.eclipse.equinox.p2.core.ProvisionException.
I have a working network connection and tried restarting Eclipse between tries. Now, the IDE is not able to install new plugins since dependencies cannot be resolved (probably because the update site can no longer be reached).