Hello,
Images in the carousel displayed using `background-image` css attribute not `img` tag. I have spoken with a professional SEO consultant and he told me that there is no need to add `alt` attribute to a `div` with background image - it will not have any effect.
also with the oabost and rocket loaders compress the js problem
i thing u can reproduce it by use https://developers.google.com/speed/pagespeed/insights/
it will compress the css and js for the plugins upload them and the images stop working
I released the plugin update with this feature included - http://www.oxwall.org/forum/topic/9652?page=1#post-171961