How do I get past an upload error when trying to upload my RP profile picture?

Most likely the picture is to big, in size, you'll have to make the picture smaller than 1mb. Try this, if you're using windows, open the picture, go to "Snip It" (software with windows) cut out what you want in picture, save and its smaller than a 1mb.
See sample, originally the picture was over 1mb, after cutting it, now it's 46.6k in size. When I load picture on RP, I always down size it, and it'll be able to be posted.

Corey Eugene Anderson-Wilcoxon Have you tried adjusting the size of the photo of your profile picture? Are you trying to upload a photo from your phone or the computer?

Lately I can't get anything with the photo to work from the app. I had to use the desktop site to update and as you may be able to tell it didn't center the photo but I'll work on it again tomorrow.