#seems like a transaction begins, I dont know really what triggers this, it isn't my code.
#Could it be something in the validation?

## controller (highlighted row is 11):

  def signup
    @user = User.new(params[:user])
!!    if request.post? and @user.save
      flash[:notice] = "User #{@user.firstname} created"
      #@user = User.new  REMOVE?
    end
  end


## user.rb code is here:

require 'digest/sha1'
class User < ActiveRecord::Base

  validates_presence_of :firstname, :lastname
  validates_presence_of :email_new_, :password, :password_confirmation, :on => :create

  validates_uniqueness_of :email_new_, :scope => :email, :if => (!:email_new_.nil?)
  validates_uniqueness_of :email, :if => (!:email.nil?)
  logger.info "--------LOGGER-------->>>>  AAFTER VALIDAITON"

  #before_create :generate_tokens
  before_save :prepare_data

  # virtual attribute
  attr_accessor :password
  attr_accessor :email_new_
  attr_accessor :password_confirmation

  def recently_changed_email?
    @changed_email
  end


  private

  def prepare_data
    generate_tokens if new_record?
    unless self.password.blank?
      self.password_hash = User.hash_password(self.password, self.password_salt)
    end
    unless self.email_new_.blank?
      self.email_new = email_new_
      @changed_email = true
      logger.info "-----> @changed_email = true"
    end
  end


  def generate_tokens
    self.email_token = User.generate_token
    self.password_salt = User.generate_token
  end


  def self.hash_password(password, salt)
    Digest::SHA1.hexdigest(password + salt)
  end


  def self.generate_token
    Digest::SHA1.hexdigest(Time.now.to_s + rand.to_s);
  end

end



##error
Processing AccountController#signup (for 127.0.0.1 at 2006-06-16 00:31:48) [POST]
  Session ID: 0d50ff63acdedf6a4bed4eafe724e74f
  Parameters: {"user"=>{"email_new_"=>"2nil3s2@alexandersandstrom.se", "password_confirmation"=>"hejsan", "lastname"=>"fredriksson", "firstname"=>"nilsaaaa333", "password"=>"hejsan"}, "commit"=>"Sign up", "action"=>"signup", "controller"=>"account"}
-------LOGGER--------->>>>  AAFTER VALIDAITON
  User Columns (0.002845)   SHOW FIELDS FROM users
!!  SQL (0.000184)   BEGIN
!!  SQL (0.000118)   ROLLBACK


ActiveRecord::ActiveRecordError (Validations need to be either a symbol, string (to be eval'ed), proc/method, or class implementing a static validation method):
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:269:in `evaluate_condition'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:298:in `validates_each'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:794:in `run_validations'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:788:in `run_validations'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:752:in `valid_without_callbacks'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/callbacks.rb:306:in `valid?'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/validations.rb:723:in `save_without_transactions'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/transactions.rb:126:in `save'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/connection_adapters/abstract/database_statements.rb:51:in `transaction'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/transactions.rb:91:in `transaction'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/transactions.rb:118:in `transaction'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/transactions.rb:126:in `save'

!!    /app/controllers/account_controller.rb:11:in `signup'

    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in `perform_action_without_filters'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in `perform_action_without_benchmark'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in `perform_action_without_rescue'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/1.8/benchmark.rb:293:in `measure'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in `perform_action_without_rescue'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in `perform_action'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in `process_without_filters'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:in `process_without_session_management_support'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in `process'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:in `dispatch'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:150:in `process_request'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:54:in `process!'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/fcgi-0.8.6.1/./fcgi.rb:600:in `each_cgi'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/fcgi-0.8.6.1/./fcgi.rb:597:in `each_cgi'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:53:in `process!'
    /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/fcgi_handler.rb:23:in `process!'
    /Users/alexandersandstrom/Sites/eduapp/source/public/dispatch.fcgi:24


Rendering /Applications/Locomotive2/Bundles/rails112.locobundle/i386/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/templates/rescues/layout.rhtml (500 Internal Error)