Error in fastcgi.crash.log

hello friends,

when i start my application i get:

Rails application failed to start properly

when i see the astcgi.crash.log file i get this:

[04/May/2007:10:27:56 :: 4809] Dispatcher failed to catch: You have a
nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.split (NoMethodError)
/usr/lib/ruby/1.8/cgi.rb:897:in parse' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/cgi_ext/raw_post_data_fix.rb:45:ininitialize_query’
/usr/lib/ruby/1.8/cgi.rb:2273:in initialize' /usr/lib/ruby/gems/1.8/gems/fcgi-0.8.7/lib/fcgi.rb:606:innew’
/usr/lib/ruby/gems/1.8/gems/fcgi-0.8.7/lib/fcgi.rb:606:in each_cgi' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:141:inprocess_each_request!’
/usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:55:in
process!' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/fcgi_handler.rb:25:inprocess!’
/var/www/html/test/dispatch.fcgi:24
killed by this error

any ideas???

thanks