SC2Mapster

I have found problem in my map involving multiple separate units with inventories. The map I am making involves a hero, with his inventory bag, and several buildings that hero can manipulate (armory, alchemy pot, etc.), and their respective inventory bags. The intention for these separate buildings was that the hero could place items he had collected around the map into one of the building inventories to craft weapons, potions, etc. Unfortunately this system does not work properly.

The problem is as follows: If I open the hero's materials inventory (He has two, one for materials and one for equipment), and drop something for the armory to pick up, when I select the armory the button used to open an inventory on the right is grayed out (meaning that I can't physically open the inventory), and the inventory is not visible. This is quite a problem for the map because it is important that the armory be able to manipulate items.

I have found through browsing the forums that if I open both of my hero's inventories before selecting the armory that the armory inventory is open, but again it cannot be opened/closed further.

I have also heard rumors throughout the forums here that it is an editor bug, so I was hoping someone could straighten this out: Is this a bug with the editor, or is there a way in the data editor to make it possible to have multiple units with inventories.

Thanks for any help!