Fixed bug with null names

diff --git a/GroupLeader.lua b/GroupLeader.lua
index 8fba184..1f9e97e 100755
--- a/GroupLeader.lua
+++ b/GroupLeader.lua
@@ -287,7 +287,9 @@ end
 -- Refresh the compass and map with the chosen texture
 local function RefreshAllPins()
     for k, v in pairs(trackers) do
-		RefreshMapPins(mapPinType .. v.name)
+    	if v.name then
+			RefreshMapPins(mapPinType .. v.name)
+		end
 	end
     COMPASS_PINS:RefreshPins()
 end