nextgen problems displaying the right gallerytype code

hello
I have the follwing question:
This is the way how i like my display in my website.

[ngg_images album_ids”1″ display_type=”photocrati-nextgen_basic_thumpnails”]

then I get the follwing problems:
invalid display type

array(2) { [“source”]=> array(1) { [0]=> string(24) “source should be present” } [“display_type”]=> array(1) { [0]=> string(20) “Invalid display type” } }

Anyone a answer? I tried different gallery settings and it only seems to work if I use this:
[ngg_images gallery_ids”1″ display_type=”photocrati-nextgen_basic_slideshow”]
but thats not the way I want it displayed on my screen.

I like to see the thumpnails!

greetings!

http://wordpress.org/plugins/nextgen-gallery/