Thread:Project:Support desk/Uploaded images aren't uploading to server; returning a 404 file not found when I click on the link/reply (6)

Ok, I figured it out...

I had Extension:SocialProfile loaded into the wiki. The hooks dealing with uploading avatar images seem to have been interfering with standard uploading.

Thanks! The error at the top of my page had to do with the upload avatar command, so I disabled the social profile extension, and now uploading works. Awesome. Thanks again!!