The custom theme editor in the back end only seems to work properly in Chrome, but this doesn't detract from the core functionality, which is why I'm still rating this extension as 'Excellent'.
Saved me a lot of messing about - thanks :)
I can now access anywhere on the server, even if files aren't directly part of the Joomla set-up. That gives me a lot more flexibility, especially not having to mess about the FTP when I want to edit any code remotely that's not normally accessible from the administration panel.
The only proviso I would give is that you do get a lot more access to the server than you might have realised, which you need to bear in mind if you're planning to give back end access to your clients.
However, for me it's spot on and is firmly on my 'essential extensions' list.
Excellent work :)