no matter what i do in the settings it won't save it, with one or multiple pictures.
the theme i have named Color Tiles that i downloaded from the internet works perfectly fine but the ones i make won't work, if i click it, it just changes the window color but no change to the wallpaper
Make sure the hidden .themes are in: My Themes is your current theme. These .theme files are located in the hiddenC:\Users\User-Name\AppData\Local\Microsoft\Windows\Themes folder. Go to folder options to view and check Show hidden files, folders and drives.