I’ve been having a similar problem. When I upload using the gallery the images show upload progress but then the app says “no images uploaded.” I looked in the forums and found nothing that would help.
So, I used ftp to upload my images into the gallery folder wp-content/gallery, etc., where I found the gallery folder I was working with. The pics uploaded, and, using NextGEN, I scanned the folder for new pics and found all my uploaded pics in the gallery!
I did not resize them.
The little thumbnail slideshow seems to work but when I click the “run slideshow” link it fails and gives the “website can not be found” message.
I’m afraid I’m new at this and I apologize in advance if I’m posting in the wrong place. I’m using the latest version of WordPress on an I7 Windows 8.1 64 bit computer.
I tried the reset options suggested in an earlier post but that did not solve my problem.
Thanks in advance for your help!
Shuz