Images won't Upload

Hi im trying to upload photos to each categories that i have made but it wont add it to the bunch thats already there. It give you an error every time you add a bunch of photos at once and then it gives you ERROR HTTP error. : HTTP Error. (just for some photos)

And then if you add photos on a different day it hangs on 100% and it does not put the photos in the gallery, i have inspect element and then go to console it gives you this error: FB.getLoginStatus() called before calling FB.init(). all.js:52?

Am i doing something wrong?

https://www.ads-software.com/extend/plugins/nextgen-gallery/