Hi,
iradoki: sorry you beat me to it, but I’m glad you got that figured out – I had no idea a theme would alter the uploads folder. I’ll update the release notes to be a little clearer.
ftadoug: the beta version expects the custom icons in the uploads directory, not in the plugin directory, as iradoki mentioned. You can also see the release notes for beta 2.38.2:
http://mappresspro.com/mappress-2-38-2-beta-available