# FAILSAFE error when attempting custom POST - How do I fault find for this? **URL:** \ **Category:** Rails\ **Created:** [January 12, 2010, 12:21am UTC](https://www.ruby-forum.com/t/failsafe-error-when-attempting-custom-post-how-do-i-fault-find-for-this/181435 "2010-01-12T00:21:16Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![greghauptmann](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/e5b9ba/32.png) [@greghauptmann](https://www.ruby-forum.com/u/greghauptmann)\ **Post date:** [January 12, 2010, 12:21am UTC](https://www.ruby-forum.com/t/failsafe-error-when-attempting-custom-post-how-do-i-fault-find-for-this/181435/1 "2010-01-12T00:21:16Z")
Hi, I’m creating the file upload code in a C# web form to upload to my Rails app. When I start the upload I get the following error on my Rails server? Any ideas how I can fault find here? It could be the case the HTTP post I’m creating has a problem (it’ multipart, with a file upload + some form parameters) however it’s hard to tell from Rails what it is causing it? /!\ FAILSAFE /!\ Tue Jan 12 08:20:06 +1000 2010 Status: 500 Internal Server Error bad content body /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb: 351:in `parse_multipart' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb: 323:in`loop’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/utils.rb: 323:in `parse_multipart' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/request.rb: 133:in`POST’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/ methodoverride.rb:15:in `call' /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/params_parser.rb:15:in`call’ /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action\_controller/session/cookie\_store.rb:93:in `call' /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action_controller/reloader.rb:29:in`call’ /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action\_controller/failsafe.rb:26:in `call' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb: 11:in`call’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb: 11:in `synchronize' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb: 11:in`call’ /opt/local/lib/ruby/gems/1.8/gems/actionpack-2.3.3/lib/ action\_controller/dispatcher.rb:106:in `call' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/rails/rack/ static.rb:31:in`call’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb: 46:in `call' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb: 40:in`each’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb: 40:in `call' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/rails/rack/ log_tailer.rb:17:in`call’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/ content\_length.rb:13:in `call' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/chunked.rb: 15:in`call’ /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/ mongrel.rb:64:in `process' /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 159:in`process\_client’ /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 158:in `each' /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 158:in`process\_client’ /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 285:in `run' /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 285:in`initialize’ /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 285:in `new' /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 285:in`run’ /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 268:in `initialize' /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 268:in`new’ /opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.4/lib/mongrel.rb: 268:in `run' /opt/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/handler/ mongrel.rb:34:in`run’ /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.3/lib/commands/ server.rb:111 /opt/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:31:in `gem_original_require' /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require’ ./script/server:3 ^CExiting thanks