I've added the topics and it goes to 2nd page. and i cliked the next page and tried with selecting the page number it shows page not found.. how to solve. link is :http://cmsonlive.com/agile-developer-new/community/

Thank you for trying to help Anonymous20. We've found the problem in core and already fixed this issue. This is a specific issue with extended wpForo shordcodes. This page is built with wpForo shortcode. Please wait for the next release, it comes soon.

that is testing server and the folder name. there is nothing wrong the url. ok. then why its not working here http://developer.agile-labs.com/community/paged/2 now its live server.

I'm sorry. We can't communicate apparently. Maybe someone more talented than me can help you out.

am talking about the topics pagination  . if u click the "next" which is below the "add topic" button. it goes to page not found. http://cmsonlive.com/agile-developer-new/community/paged/2

Your url/basepage setup if WRONG somewhere.

Read carefully my reply. That is why pagination doesn't work.

Your forum base url:

http://cmsonlive.com/agile-developer-new/community/

Your Topic (a random one):

http://cmsonlive.com/agile-developer-new/community/forum/axpert/axpert-x-next-release-date/

should be:

http://cmsonlive.com/agile-developer-new/community/axpert/axpert-x-next-release-date/

Also try to keep the urls short. The "agile-developer-new" part is not needed. Google doesn't rank good long urls, or better ignores the last right part (indexed but with no rank for the words in url). But your right part is the Topic url and that is important to keep.