Image failed to download
I have the same problem, also it doesn't want to download and show whole map, only just zoomed pieces... o.o
Use the CUSTOM folder, not the ICON folder.

Merged post

To show the full map, type /map ingame. Also check the following:
"Map - Complex Options": {
"Enable the complex map": true,
"Force complex zoom mode": true,
"Forced zoom number (1, 2 or 3)": 2

These options are there to choose between Zoomed and Full map. Disable the Complex Map to show full map.
Zoom mode will change the distance players will see at once. 1 is far, 3 is closeup.
@Spine77

In no case are there any icons in the LustyMap folder. If you read the plugin summary a bit, you would have seen that there is a link to download the icons and place them in the corresponding folder. If that's what you asked for.