Just in case anyone has had trouble installing the 3.x version of Grep Console, I’ve fixed a link on the update site. Before the fix, the link on that page pointed to the old update site which, when entered in Eclipse, would only install the old 2.x version of Grep Console. The link is corrected now. If you’re stuck on version 2.x, or if the update site in your Eclipse is “eclipse.musgit.com” instead of “eclipse.schedenig.name”, please update to the correct link found here.
If you copied the update link site directly from the installation page, or if you used any of the download links there or in Eclipse Marketplace, you should have had the correct version all along. No need to do anything in this case.
Thanks to “Glen” for pointing out this error.