invia spell particles on NPC's?

[Kottos]

I'm having an issue where i can see players or npc's casting spells but when the spell has finished casting and would hit its target there are no graphics. So for example i cast root on a NPC i can see the green bubbles around the NPC's feet but if another player casts on a NPC/PC i can not see those bubbles around their targets feet. its like this for all spells though. i've tried messing around with particle settings but im having no luck any helpful advice would be appreciated.

Thanks in advance!