Hi Javy,
Does your v7.5 version come from a fresh install or from an update of a previous version done with "mGalaxy_Updater.exe"?
The icon you're missing should be in "mGalaxy > Data > BaseSystems > Group > icon.png"
Could you check if you can find it there?
If not, here is it, simply put it in the right place (the one given upper)