Unable to upload flash or ,swf files xibo 1.7.10

hello team, I get an error when I try to upload flash files to my xibo templates, regardless of the size in MB of the file of size as in width and height. I am able to upload the same swf files to my other xibo 1.7.9 which is hosted on a paid hosting service.

I can upload video and jpeg files okay but when i try to upload a flash (swf) file, i get this error: Image requires a minimum width. what is the issue? has any of you come across this problem yet?