Player window - combat icons
 

Ive been trying to get the Combat icon indicators on the player window to work,
ive even tried adding a new set to the player window and they dont even show up either. i know Fetish has it as i see it in the uibuilder under Combaticon but it doesnt even show up. Anyway to enable it? it sits right next to the pvpicon

Sounds like you're missing the DynamicData for it. I'm not sure which combat icon you're talking about because there are many different combat ones.

These are some of them:
/GameData.Self.IsHated (comes up whenever a mob is hostile to you. ie attacking you)
/GameData.Self.RangedAutoAttack (comes up when you range auto attack)
/GameData.Self.AutoAttack (comes up when you auto attack)

I'm thinking that you mean the AutoAttack one because whenever you enter combat auto-attacking; the icon shows up.