So you're going to Admin panel -> Settings -> Company.You're successfully uploading a custom logo.You're changing the radial to the new image, clicking save Changes?You are then clearing your browser cache, browsing to the client side (non /scp), and your image is not there?I do not have a 1.9.3 installation to test this on, but its worked on older versions and works on my 1.9.4rc2 install.