Trying out the comet/chat demo - missing library?

> Hi,
>
> I'm not sure how I can get the missing requirement for trying out the
> comet/chat demo of seaside:
>
> When visting:
> http://localhost:8080/comet/chat
>
> After sing-in, and attempting to chat I see the following message in the
> Chrome console:
>
> Failed to load resource
> http://localhost:8080/comet/chat?_s=376MRAjcLjQ8RGuI&_k=bJ9QheLNTTmthEs2&3&2=Chattin
>
> Inline image 1
>
> Anyone have any tips on how I can get this 'streaming server'? I assumed
> when installing SeaSide I would get all the required libraries, sorry if
> I'm not very clear, I'm still trying to wrap my head around how the
> SmallTalk environment works, (running on Pharo)
>
> Thanks!
>
> Victor Stan
>
> Schedule me:
> http://quicklyschedule.quicklyschedule.me/victor
>
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> http://contactmonkey.com/victor
>
>
>
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