I haven't had this error for a while. But, it is a clunky app that makes me rage quit too sometimes. At first i just made sure i was logged in properly before i posted, that helped. Sometimes it takes forever to upload and it doesn't always work. Without any real particular reason why that might happen. It's pretty random. But, i still like using it. Just made a new post today actually! Best of luck to you on your steepshot posts!!