Buddypress registration page error?!

Hello, I am using the buddypress plugin with wordpress 3.2.1 and I am having a problem with my registration process. The initial registration page is fine, where users can create their personalized usernames and passwords, the problem occurs after the user selects the “Complete Sign up” button. Usually the next page seen is, Thank you for registering, you will recieve an email with a link to complete the sign up process. But instead of seeing the page with that message, an error page appears that reads: HTTP 500 Error. I have been told that it is calling for a page that no longer exists. Maybe a new plugin i installed deleted a neccessary page for registration,or maybe a plugin ihave installed is blocking the registration process. I am confused and frustrated and have been searching for an answer for weeks. Any Ideas on how i can find the missing page or any help on how to fix this problem would be greatly appreciated. Thank you very much in advance