Cannot transition state via :ship from "picked" (Reason(s): State cannot transition via "ship")

[kalkov]

http://localhost:3000/admin/orders/R458374544/shipments/H366018210686/fire?e=ship

state_machine (1.1.1) lib/state_machine/event.rb:241:in block in add_actions' state_machine (1.1.1) lib/state_machine/machine.rb:753:incall'
state_machine (1.1.1) lib/state_machine/machine.rb:753:in block (2 levels) in define_helper' activerecord (3.1.3) lib/active_record/associations/collection_proxy.rb:91:ineach'
activerecord (3.1.3) lib/active_record/associations/collection_proxy.rb:91:in method_missing' spree_core (1.0.3) app/models/spree/shipment.rb:136:inafter_ship'
state_machine (1.1.1) lib/state_machine/eval_helpers.rb:56:in `evaluate_method'