Spellguard Workshop Movable Ordinance Bug

[Dina]

The center table in the workshop has the quest for this engineering project.  It requires 500 gold and a Svirfneblin Power Sphere.  I thought I had everything I needed based one the quest description and it took my gold but it didn't recognize the Svirfneblin Power Sphere in my inventory as the required item.  Maybe there's a different power sphere I need?

[Demure]

There is a different one, yes.