Hi
I've had this issue from time to time.
I don't know why but a program icon will just stop showing.
The only way I've found to fix it is to go into Properties and tell it what Icon to use.
Sometimes it will show the default icon at the start and you can just click on it and hit apply, otherwise you either have to track the icon down in the installed folder or just select one from the assortment provided.
I'm obsessive so I often make my own icons.
I find that using properties and applying icons to folders I access a lot in Windows File Explorer is a big help.
When you have a list of folders that's several screens deep, those colorful icons really pop out of the long column of yellow folders.
As for the .jpg file if you want it...