BuddyPress.org

I’m not sure if this is a problem with BuddyPress or some alteration someone has made to this instance. I was handed this project from someone else. One of the issues is that the link to send a private message is:
messages/compose/?r=recipient-name
which, if you are looking at their profile, the end URL when you click it is:
/members/recipient-name/messages/compose/?r=recipient-name

I compared this with the private message url on the BP install here: http://testbp.org, and it looks like where recipient-name is in the URL, it should be your own username. So, I tested the URL:
/members/my-username/messages/compose/?r=recipient-name
And that worked. So the only thing I need to figure out is how to correct the URL. Any suggestions? Can someone point me to the right file and/or patch.