Save replacement image not working

Hi - trying to update the slides from the quickstart version of Storefront. I have tried uploading a NEW image to replace the default slide1.jpg. However, each time I try to SAVE the new slide, I get a successful message saying the save has been successful, but the original slide1.jpg is still there. I have also tried clicking on the CLEAR button but this has no effect. Any ideas, anyone? Thanks, Mark

Hi

Start from updating module to the latest version and clear browser cache when editing it's settings. Try replace it than. Let me know if this changed anything.