Problem installing new plugin

[armpouniotis]

Hi there !

I am using elxis Nautilus and when I am trying to install a new plugin, I got this error:

Could not rename/move /public_html/elxis/repository/tmp/package_20121217202703_901/mod_categorymap.php

How can I fix it

Thank you in advance
Christos

[datahell]

Folder components/com_content/plugins/ needs to be writeable.
Chmod that folder to 777 (or 755  depending on your server setup).