@mercime i installed buddypress in my localhost.its working when permalink set as default..but i make change in permalink,it doesnot work(show 404not found page).
Thanks for reply @mercime..
I have installed the latest version of BuddyPress on a WP.
However, the Activity, Members, Groups, and Blogs tabs all show “Page not found” errors.
I tried deactivating BuddyPress, resetting the permalinks, and then reactivating BuddyPress, but still am receiving the errors.also i did mod-rewrite to apache server and customize my .htaccess file.But still i am getting same 404error.