Application error Change this error message for exceptions t

Buenas pues me da este error,
Application error

Change this error message for exceptions thrown outside of an action
(like
in Dispatcher setups or broken Ruby code) in public/500.html

lo curioso es que en local me funciona perfectamente sabeis si hay algo
que
tengo mal ?

NoMethodError (undefined method new' for Test:Module): /app/controllers/alumno/test_controller.rb:572:inModoPregMenu’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:in
send' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1095:inperform_action_without_filters’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:632:in
call_filter' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:638:incall_filter’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:438:in
call' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:637:incall_filter’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:619:in
perform_action_without_benchmark' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:inperform_action_without_rescue’
/usr/lib/ruby/1.8/benchmark.rb:293:in measure' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/benchmarking.rb:66:inperform_action_without_rescue’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/rescue.rb:83:in
perform_action' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:insend’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:430:in
process_without_filters' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:624:inprocess_without_session_management_support’
/usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:114:in
process' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:330:inprocess’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:41:in
dispatch' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:168:inprocess_request’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:143:in
process_each_request!' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:109:inwith_signal_handler’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:142:in
process_each_request!' /usr/lib/ruby/1.8/fcgi.rb:600:ineach_cgi’
/usr/lib/ruby/1.8/fcgi.rb:597:in each' /usr/lib/ruby/1.8/fcgi.rb:597:ineach_cgi’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:141:in
process_each_request!' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:55:inprocess!’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:25:in
`process!’
dispatch.fcgi:24

Aqui os adjunto el codigo correspondiente a donde deberia de estar el
error
@session[:test] = nil
-> @test = (session[:test] ||= Test.new)<-
@test.inicializar
@test.setmodo(1)

bueno y os adjunto tambien un trozo del test.rb

class Test
attr_reader :preguntas
attr_reader :resultados
attr_reader :respuestas
attr_reader :posicion
attr_reader :num_preg
attr_reader :nuevo
attr_reader :modo
attr_reader :acabado

def inicializar
vaciar
end

def vaciar
@preguntas = [] #aqu van las id de las preguntas
@resultados = [] #aqu va el resultado de la pregunta
@respuestas = [] #aqui va el resultado del alumno
@posicion = 1 #aqu va la posicin de la pregunta que se est
visualizando
@num_preg = 0 #aqu va el numero de preguntas que contiene el
test
con lo que tb
#es el numero de preguntas, respuestas…
@nuevo = 0
@modo = 0
@acabado = false
end

def setnuevo(num)
@nuevo=num
end

Bueno voy bastante perdido porque en local si que funciona, es diferente
version de rails, pero aun asi. Bueno Gracias de antemano

  Francisco José Blanco Montero

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