Caching of Home Menu Icons

Hi,

I am using Nebula on Libreelec, latest version – very nice skin !!

If I change the image file for a home menu item, the change is not reflected in the home menu (new file has the same name as old file).

I presume it is because the image file is cached somewhere. How do I force Nebula / Kodi to refresh the cache used for menu items?

Regards