We are running Moodle 2.5.2+ on Unbuntu. I can download 2.x themes (ex: Essential for 2.5.x) and copy the files into a folder in the theme folder (ex: theme/essential) but the new themes only show up as the word pluginname surrounded by double brackets (if they show up on this forum, it looks like: pluginname).
I have searched the forums for info, and the number issue seems to be people trying to install 1.9 themes in 2.0, but that is not what I am doing. I am installing a 2.x theme.
Is it possibly a permissions issue? I am a Linux newbie, so any help is greatly appreciated.