Gallery Not Viewable

Installed nextcellent plugin, deactivated nextgen plugin and then activated nextcellent plugin.

I then went to view my gallery page which was created when nextgen plugin was activated and whose code is [ngg_images album_ids=”1″ display_type=”photocrati-nextgen_basic_extended_album”] and all I see is [ngg_images album_ids=”1″ display_type=”photocrati-nextgen_basic_extended_album”].

Can anyone see what I need to do. Thanks.

https://wordpress.org/plugins/nextcellent-gallery-nextgen-legacy/