Board Thread:Support Requests - Getting Technical/@comment-25024589-20150322145851

I am having trouble uploading .PNG images.

I tried to upload a .PNG image to the Episode Wiki via the Classic Editor's "Photo" button, but instead I got the following error message:



I then tried to upload the same image to my test wiki via the "Add a Photo" button at Special:NewFiles, and I got another (different) error message:



Is there an explanation? I've uploaded .PNG files to wikis before, but it wasn't until today that this has ever happened to me. 