Something's definitely wrong on the back end. What error are you getting?
6 years ago(+1)
Oh that's even worse. I'll see what I can do but I'm hoping fixing the other issues will fix whatever this is.
6 years ago(+1)
Turns out Gelbooru updated their software at some point and broke the image downloading code pretty much completely. I'll be uploading a new version with a fix for that and some other bugs as well as some new features in a few days. Sorry for the inconvenience.