I am having the same issue. Has anyone been able to resolve it?

I login, click on Event Management > Event Name > Edit Information
Here in the Event Information screen if I add images to any of the following:
Event Logo, Small Banner Image, Large Banner Image, or Speaker Image, they don't appear to be uploading or displaying correctly. When I check the preview links they all appear as broken images. I have tried multiple image types - jpg, png - I have tried resizing the images, I have tried adding one at a time, I have tried clearing them all, logging out and logging back in, and no matter what I do the images always fail to appear.

This is now fixed for me