batobin:
More of a suggestion than a bug fix.   I noticed that by default you comment out the following line in config.  php:

$conf['demomode']=true;

I would suggest that you don't comment the line, but rather leave it intact like this:

$conf['demomode']=false;

I suggest this because a default installation spits out error messages when the entire setting is commented out.   I logged in for the first time and immediately changed the root admin password, only to see this error:

Notice: Undefined index: demomode in /home/brian/public_html/livechat/class/operator.  php on line 257

It appears operator.  php is looking for that setting and errors when it's commented out. 

Just a small suggestion.   Thanks for all your work. 

BT