When you delete a marker, it still tells you that you deleted it after you already deleted it. Also the preview image shows no vending machine with a named MapMarkerGenericRadius, is that still possible? As currently it just displays a shop where the marker is as well.
Meaning the following:
Input: /marker add test1 0 3 0.4 "Test Marker" 00ffff 00ffff 0.75
Input: /marker remove test1
Output: 1 markers with that name was removed!
Input: /marker add test1 0 3 0.4 "Test Marker" 00ffff 00ffff 0.75
Input: /marker remove test1
Output: 2 markers with that name was removed!
Input: /marker add test1 0 3 0.4 "Test Marker" 00ffff 00ffff 0.75
Input: /marker remove test1
Output: 3 markers with that name was removed!