NextGEN Gallery problem

I have been using this gallery for a quite some time
After last update it no longer work
when page with gallery come-up I am getting massage [Not a valid template] short code do not work.
I place gallery window using icon on the control panel as instructed in the direction on the manual, still same issue
I have tons of images to be posted and I cannot figured out what is wrong…
I appreciate any assistance

Thanx

https://wordpress.org/plugins/my-page-order/