Arghh... I've gone through the instructions again and again and double checked everything... but when I click on my chat url (chat.php, embeded), it opens a blank page. I'm assuming some php error but nothing shows up in the error log.
I wish I could give more info, but I really don't know what I could have done wrong

Using a free sigmachat account for now. One thing that I'm not quite sure on - I use multiple VB styles - does it matter which style I create the sigmachat_x templates under?