I have now tried to add the bp-template-pack from the wordpress.org site (https://wordpress.org/extend/plugins/bp-template-pack/). However, the download worked fine, the installation went fine, but upon activation both my admin and site went blank. Literally white pages instead of both. Any thoughts?
Hmmm, addition to the problem. Apparently it gives people that log in using twitter the name username@twitter. Is there somewhere that I can switch that off?