When using vial of token essences some of them have trouble applying properly to the creatures. Watching the popup box in the triggers when applying the tokens it didn't seem any problems occurred but when checking the creatures page it is obvious, certain creatures affected can no longer load the portrait correctly on the creature page (loads fine in the create ritual page though) as seen here. somewhat similar to http://magicduel.invisionzone.com/topic/18042-html-crit-inventory-page-bug/
The issue being that these tokens have no effects in battle, exhibited below. I'm not sure which