map assignment fails sometimes?

[jywarren]

for http://mapknitter.org/map/assign/jywarren/?claim=true&author=publiclaboratory

NoMethodError in MapController#assign

undefined method `login' for nil:NilClass
RAILS_ROOT: /home/warren/sites/mapknitter.org

Application Trace | Framework Trace | Full Trace
/home/warren/sites/mapknitter.org/app/controllers/map_controller.rb:388:in `assign'
/home/warren/sites/mapknitter.org/app/controllers/map_controller.rb:386:in `each'
/home/warren/sites/mapknitter.org/app/controllers/map_controller.rb:386:in `assign'

[jywarren]

deprecated feature