Custom Background images not saving

I added custom pictures to my background for each menu item. As I scroll through the menu items I can see all of the pictures I set up as background images for each. Now when I log out and log back in all of the images are reverted back to default. Any suggestions as to why this could be happening? I should also mention that its for an Amazon Fire Stick and I saved images from the Google addon and created a folder in my Profile Directory Library named it Pictures. The path used to get to the pictures is what I use to Custom Build my background. Please Help.