Thank you for a great plug in! I'm using it on a non profit site and its working perfectly for our needs.
I loaded a fresh copy of this on another WP site I'm working on. I added a contact from my place of employment then used the copy feature to duplicate it and change the contact name and cell phone. Like "Another contact from this business" tool. When I made a page to view the contacts the V-Cards all linked to the first contact I entered. Since I made my own template I assumed I did it and checked my work first.
I found that the SLUG stayed the same for every contact I copied and I could not find a place to fix the slug within the plugin. I went to my SQL and fixed it directly in the database.
I'm 99% sure I did not cause this in my template or settings. If indeed a bug, do you know if it is with the latest update? I have 52 entries on the nonprofit site and I used the copy feature on a couple of them.