Today I learned of a bug with wp-SwimTeam where the list of Users associated with the site doesn’t get populated when running under WordPress multi-site. This problem does not happen on standard installations of WordPress.
I am looking into the problem but it isn’t a simple solution as the query references the explicit users table which isn’t the same under WordPress multi-site.
I thought I had a quick solution but it didn’t work so I will need to sit down for an hour or two and sort this out over the next couple of days.