TOPIC: CComment Core - nothing works

I've just installed the CComment Core extension for Joomla - and nothing seems to be working.

And by the way, the Image Link button above this window doesn't work either.

Man, this really is a "nothing works" situation. I dragged and dropped two files into the attachment box but the second one was apparently not accepted, a message "Failed to create attachment directory." was shown.

Trying again for second file.