Servercraft now offers a great and easy to use File Editor via our Servercraft Portal.  With this editor you can get a quick snapshot of installed plugins, view and edit configuration files, and delete plugins. 

Go to your Servercraft dashboard (servercraft.co/login) and log in.

Go to your MyFiles section.

Craftbukkit plugins are located in your plugins folder, open that and then the plugin folder you wish to edit.

Unfortunately, there is currently a bug in the editor that clears any file with a '&'.  This includes the Essentials config.yml.

For now, you'll need to download any files with a '&' in it, edit it on your computer, then upload it back.

We'll try to have the issue corrected as soon as possible.