I have followed all of the suggestions (e.g., permissions set to 755, PHP Safe mode off, deactivated plugins, used WordPress theme) and emptied my cache and reloaded my website each time.
I am not sure what else to do, but I can’t get my pictures to upload now. The other night some pictures unloaded and some didn’t but it’s not clear why NextGen is choosing to upload certain photos when they are all in iPhoto and some were taken at the same time.
Thank you.