Uploaded Images Don't Show

First off, I am no developer. I am a web designer/graphic designer. So my coding skills leave something to be desired.

Now on to the issue:

Just before the recent update to 4.0.1 images showed up just fine. Now they are completely blank in the media library, posts, pages, etc. What’s the deal? I’ve done everything I could think of: change permissions, uploading manually… Nothing works.

I’m using Magee Themetify theme if that is of any use.