Hi,
ok, few things:
-- the ResourcesLoad action works fine in Unity 5, I just tested, can you explain what's wron and why you had to edit it?
-- I validated the principle here, I can load a sprite from a Resources folder using the action "resourcesLoad" and it's fine, the important setup are:
the resourcesLoad MUST be set properly,
type must be "object"
Object Type must be "UnityEngine.Sprite"
StoreAsset must be a FsmObject of type "UnityEngine.Sprite"
Success and Failure event must be transitions of the state so that you can validate the good execution of the action.
I have attached the test I just did, can you confirm that scene is working for you on your end?
Bye,
Jean