Great plugin! This thing was a lifesaver. However, I encountered an issue when there was thousands of files in one folder. I could check all of the checkboxes, but when I tried to import then, the page just refreshed without importing any of the images. I had to do them in batches of a hundred or so which took a lot of time.
Just thought I'd give you a heads up so hopefully you can get this fixed for the next person.
Again, such a helpful plugin!