I just installed this on a new website where members (who don't know how to resize photos can upload) and it works beautifully.
It even works from my iPhone (with OS 6.1.3) even though the Description says it won't. I used the phone's Safari to access the site, made a New Post and Insert Media > Create Gallery. You have to upload existing iPhone photos one at at time and it's a little clumsy on the small screen -- but it works!
Thank you! Thank you!