Thanks everyone for the quick replies!
@jeff I looked at the link you sent, but I’m not upgrading so I’m not sure it applies. I just downloaded BuddyPress this morning.
@DJPaul the themes are in wp-content/themes/ and the member theme in wp-content/bp-themes/
@andy the permissions on that file were 644. I changed them all the way to 777 with no change. What should the permissions be?