I looked into the empty depths of my pocket and scraped funds to purchase a new license for our previous gallery. As told before, the gallery feature did not like being transplanted into a new environment, but as our data base carried over the backbone information regarding users and their pictures, I hoped we could literally revive remnants of the old Gallery. After all it contained > 700 images.
Which indeed manifested itself. We now have a Gallery!!
However, some user galleries will be 'blank' i.e. not showing any pictures as these members did not renew their NG Supporter status. Just saying.
NG supporters have all functionality of the Gallery available, while NG members have a more restricted access.