Slideshow lost off the page

First, thank you all so much, I had dreaded moving my 250 gallery’s to another gallery plugin.

So I installed the NextCellent Gallery in the approved manner and all works well except the slideshow.

When I browse to the location it should be at there is the page with all expected items but no slide images, but when I click the slide location I get the “bounce” (set in the slideshow tab) pushing at the other page objects as expected, but no slides can be seen.

If I “inspect element” in chrome at the location of the slideshow, select the elements tab, the line with the div owl stage has “<div class=”owl-stage” style=”transform: translate3d(-9480px, 0px, 0px); transition: 0s; -webkit-transition: 0s; width: 15168px;”><div class=”owl-item cloned” style=”width: 632px; margin-right: 0px;”>

To the right, the box that shows the margins, borders and padding tells me the selected item box size is 15167.9 x 11175.4
If I play with these sizes (make them smaller) I can sort of see my images in a long list jumping around off the edge of the page as the slideshow rotates the images.

I wandered around the framework.css file but I do not understand how the css slideshow functions in this plugin and had no luck (still looking). If there was more info on this function I would go further, so some hints (is my other css messing with this?) or a workaround would be great.

Using the plugin’s “plugin check” I get all green checks.
Thanks
S

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