I keep getting a blue box with a white question mark in it when I am in mail applications. I can see my images as a png when I save them on my desktop to load into my email signature line, but when I put them into my email signature they are gone and replaced with this question mark box. I cannot do anything with this box once it is there except delete it. I have restarted my computer and email and everything many many times and nothing changes. I just noticed that the same little box showed up on my work email where the company logo should have been. Also, I took a screen shot of my work email showing this little blue box where the logo should be and attached the screenshot on this message and even it is a blue question mark box. Any help is so greatly appreciated.