Weird, I tried doing mine all over again and it worked just fine. Just in case, this is what you do:
After you click on the "Member's Map" link and the map comes up, click on "Your Entry" at the top of the map.
When the map comes up with the red pointer, click in the general area of where you live to place the marker.
Once the marker is placed where you want it, scroll down and click the "Update The Information" button at the bottom.
Your marker should show up in green after the map loads.
If you've already done all these steps and still can't get it to work, let me know. I'll try to get a hold of Robert to see if maybe there's something up with the system.