I've been trying to do the space maze activity from www.raspberrypi.org/learning/space-maze
It goes fine on Windows but when I try it on an R Pi3 I've borrowed (from Yorkshire Jams lending library) I can't open the sprite or backdrop png files. When I try to open one in Scratch it goes to 'Recently Used' but will not load any of the files. I have to use esc to get back out. Is it something to do with how the Scratch program accesses the File Manager?