BuddyPress.org

Sean-

First things first:

Warning: Cannot modify header information – headers already sent by (output started at /home/aristech/public_html/Verivex.com/wp-content/plugins/buddypress/bp-core/bp-core-avatars.php:370) in …

The “Cannot modify header” error almost always indicates that there is some extra stuff (whitespace, extra text) before the opening php or closing php tag. It could be in one or both places. There must not be anything before or after the opening and closing PHP tags–not a single space, not any extra characters, not a single carriage return.

Did you open up bp-core-avatars.php? If so, you may have inadvertently added this error to the file.

Did you install BuddyPress yourself?

Open up bp-core-avatars.php and look for the whitespace or extra stuff. It should be removed and the file saved.

Report back on what you found and if that helps.