Question re: "can_has_chat" plugin

Hi there,

I’ve installed the “can_has_chat” plugin
(http://code.google.com/p/canhaschat/) with all its required
dependencies (and following the instructions in the README file).

But I get the following error message when I try to launch the chat
server:

./…/vendor/plugins/canhaschat/lib/can_has_chat/remote/boot_server.rb:33:in
dirname': can't convert nil into String (TypeError) from ./../vendor/plugins/canhaschat/lib/can_has_chat/remote/boot_server.rb:33 from chat_server:3:in require’
from chat_server:3

Has anybody already used that plugin and could help me out here? I’m
really stuck - I really don’t have a clue about what to do with this…

Thank you very much for any help!
Tom