Hello,
I had exactly the same problem that Dugee 2 days ago when upating the plugin automatically. All my pictures disappeared but I managed to show them again after remaining the folder “nextgen-gallery” into “nggallery” (why does the name had changed??).
But now the pictures gallery don’t show up correctly (1 column instead of 5) like if the css was not recognized, and the slideshows don’t upload. It’s even worth in Firefox.
Here is my website: https://www.planete-coursdeau.com/wordpress/?page_id=15
Please help us save this bug as we are many with the same problem.
Thanks in advance
Solene