If the _N. vieillardii_ seeds were through the ICPS seedbank
the problem may be a fungus. The batch of seeds I recieved
was carrying something. Try spraying with a fungicide ASAP.
I'm still using Benlate. Also I planted some _N. vieillardii_
seeds in July. Seeds are still germinating as of this week
so don't throw out the pot.
Good Luck!
Jeff