It doesn't work..

I installed the plugin NEXTGEN GALLERY, and also this.
I made a gallery by uploading 9 pics at ADD GALLERY/IMAGES.
I can see the gallery I made at MANAGE GALLERY.
It’s ID is 1.
It has no PAGE ID cause I choose ‘not linked’
after, I made a PAGE at default template.
I add this code and published

[nggg id=1 map_width=600px map_height=300px map=Road thumb_desc=0 thumb_width=50px thumb_height=50px minimap=1]

but nothing happened.
I can see really nothing.
Do you know what is the problem? and how to solve this.

http://ww.wp.xz.cn/plugins/nextgen-gallery-geo/