I am getting "Making a concave physics object kinematic..." error or warning message for some of my quest items. I would really hate to abandon one on my primary quests because of this.
I suppose the real problem is that any attempt to move these objects will make it disappear almost like it would fall through ground or surface. The same will happen if I drop these items on ground from an inventory.
I think the problem is caused because some vertices are slightly miss places in a physics mesh. I don't know how to fix that in this toolkit. Is there a physics mesh auto-generate option somewhere ?