Image switch

[VisiongGeiger]

I developed a kivy windows app to monitor a file which received figures sent by a camera using FTP server(serv-U). I found that if i changed the source of an image to another(corresponding to the address of the latest figure in the file), the image element just couldn't show it correctly. When i test it by just copy and paste figures, everything works well. I am wondering if this is an issue from the difference from just sending images to a file and sending images by FTP.