sosol error

Processing PublicationsController#create_from_selector (for 137.73.160.27 at 2010-03-08 06:17:44) [POST]
  Parameters: {"authenticity_token"=>"HTtKeIGzdPmdyk66wPSL4pea7Ae6tHJcqL9AEnWuR+8=", "IdentifierClass"=>"DDBIdentifier", "DDBIdentifierCollectionSelect"=>"rom.mil.rec", "HGVIdentifierCollectionSelect"=>"", "volume_number"=>"", "document_number"=>"78", "commit"=>"Emend"}
  User Load (4.0ms)   SELECT * FROM `users` WHERE (`users`.`id` = 3) LIMIT 1
Identifier: papyri.info/ddbdp/rom.mil.rec;;78

NoMethodError (undefined method `each' for nil:NilClass):
  app/controllers/publications_controller.rb:297:in `create_from_selector'
  haml (2.2.4) [v] lib/sass/plugin/rails.rb:19:in `process'
  file:lib/jruby-rack-0.9.5.jar!/rack/adapter/rails.rb:35:in `serve_rails'
  file:lib/jruby-rack-0.9.5.jar!/rack/adapter/rails.rb:40:in `call'
  file:lib/jruby-rack-0.9.5.jar!/jruby/rack/rails.rb:148:in `call'
  file:lib/jruby-rack-0.9.5.jar!/rack/handler/servlet.rb:18:in `call'
  :1