Image won't upload, error message: id: 2500 the reason is: S3Upload(0)

I can’t add an image to my prezi. The background image will load, but any others, I get error message:
File type not supported

Technical details:
id: 2500 the reason is: S3Upload(0)

They are small jpgs, I’ve tried pdf
Please help!

Vanda. …thanks for your reply.

I’m struggling with why a picture will load as the background. …but that same picture won’t load as an image within the presentation.

I would think if it comes through in one area, it’s not a hardware or naming issue.

It seems that maybe it was my browser… If you use Google Chrome it will load without any problems. Thank you for your response.