I was trying to add an image file (.jpeg) to a content slide. After clicking the file link, the dialogue box opens successfully. I navigate to the file I want, highlight it, then click open and nothing happens. After waiting for several minutes still nothing. I click cancel and eventually the dialogue closes. If I immediately click file again, I can then add the image file to the content. If I try to add another content item, I have to go through the same process.
