Hi there. I've just started playing with a friend. After he has logged off I've seen that all his creeps died and now his controller decays.

So I've build a creep on my side to upgrade his controller. I wasn't expecting that I couldn't do it and was suprised that the method upgradeController returned ERR_NOT_OWNER.

You are not the owner of this creep or the target controller.

My Question

• Why can't I upgrade other players controllers?
• Why can't I repair their creeps?
• Why can't I transfer energy to their buildings?
• (I haven't tried to repair another players creep or to transfer energy to another players spawn yet, but the documentation says that this is impossible too)

It seems logical to me that I can't do "bad" stuff like harvesting their resources, but why can't I do "good" stuff?