Problems with AI SVG file disappearing

I was wondering if anyone can help with a problem I'm having when using Illustrator SVG files in Edge Animate.

When I resize the image it will disappear and sometimes come back.  The contents are still there when you view them in a web browser, but when I'm trying to layout text or other items in Edge Animate it's rather difficult since I can't see the contents of the file on my screen.

And does this have anything to do with the message:  "SVG files require proper web server MIME-type configuration"  ??

Thanks for any help or direction.

Robert