When I open a topic, then click on the RSS feed, I get the message:
The webpage cannot be displayed
Most likely cause:
Some content or files on this webpage require a program that you don't have installed.
What you can try:
Search online for a program you can use to view this web content.
Retype the address.
Go back to the previous page.
I use IE7 on Windows Vista, running BBpress on linux and mysql