Hello,
If you use "OS Image Gallery" the module - we now not support it.
Best if you download new version OrdaSoft gallery
ordasoft.com/os-image-gallery.html - and move all images to it.
This image gallery - has more features, please check it
if you use "OS Image Gallery" the component, you need simply download new version and not remove old - install new version
ordasoft.com/os-image-gallery.html
Regards
Andrew
OrdaSoft team