Sorry Dellroy, it looks like this problem is system wide. I even got it when I tried to click on the java applet. I think John will have to eventually fix it as Im sure it hasn't been updated in ages.
I would recommend for now downloading Mirc. After you download it and set it up, return to this link
http://www.johnfowles.org.uk/LIGHTFOOT/chat/ , click on the Mirc link: and it should take you to the chatroom.
And eventually I do plan to try and set up that voice chat in Pal talk...just been really busy and unbelievably tired lately. I almost forgot about the chat tonight as a matter of fact. Anyway, 9 pm eastern as always.