Delirium points cannot be allocated

I have earned 6 passives points on my delirium tree and I allocate them as usual,but when I wanted to allocate my 7th point on the tree,it does not allow me to allocate that point as if I dont have any points.Tree only allow me to allocate my current points to the nodes when you earn your first point.I cannot currently going up on the tree of delirium nodes.