Hello.
Thanks For The File, the Chat Shall Be Very Good.
The Unzipped File DON'T Contains the "config.php" file located at "/chat/inc/config.php".
It'll be important that you review the Download Zipped File and Include all the Necessary Files for the Add-on to work Ok!!
I had to Disable it because when trying to access the FlashChat Link an Error occurred that Avoided me the Access to the Forum, fortunately Not to the Admin Control Panel where I was able to Disable the Add-on and Restore the Forums Access again for the Users.
I'll be hoping that You Include the Complete Version of the Zipped File to Download It and Try It!!
Thank You Very Much!!