Three times now, I have set my wall art and once again the images are gone and I am left with red boxes. I did lock it. I have tried finding images from different locations. Anyone know what might be the problem?

I used the technique your supposed to use. I set my script to cache webloadimage, set my state to textures unlit, went back to script and enterd the url i got by right clicking on the image and using "copy image location". I then lock and close. Leave an comeback and the image is gone.