Anyone know what causes this?

In my app I've started to get a 500 error whenever trying to post to a create method

/!\ FAILSAFE /!\ Sat Apr 11 18:42:28 +0100 2009   Status: 500 Internal Server Error   string not matched

According to the log it doesn't even get as far as the POST

anyone know what might be causing this?

I also have nested resources in my app - when creating one of them they seem to work fine! ?

here's the full trace from the log:

/!\ FAILSAFE /!\ Sat Apr 11 18:42:28 +0100 2009   Status: 500 Internal Server Error   string not matched     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:73:in `='     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:73:in `normalize_params'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:89:in `normalize_params'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:58:in `parse_nested_query'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:56:in `each'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/utils.rb:56:in `parse_nested_query'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/request.rb:132:in `POST'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/methodoverride.rb:15:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/params_parser.rb:15:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/rewindable_input.rb:25:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/session/cookie_store.rb:93:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/reloader.rb:9:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/failsafe.rb:11:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/lock.rb:11:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/lock.rb:11:in `synchronize'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/lock.rb:11:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/dispatcher.rb:106:in `call'     /Users/Gavin/.gem/ruby/1.8/gems/rails-2.3.2/lib/rails/rack/ static.rb:31:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/urlmap.rb:46:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/urlmap.rb:40:in `each'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/urlmap.rb:40:in `call'     /Users/Gavin/.gem/ruby/1.8/gems/rails-2.3.2/lib/rails/rack/ log_tailer.rb:17:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/content_length.rb:13:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/chunked.rb:15:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/handler/mongrel.rb:61:in `process'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 159:in `process_client'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 158:in `each'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 158:in `process_client'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in `run'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in `initialize'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in `new'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 285:in `run'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 268:in `initialize'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 268:in `new'     /Users/Gavin/.gem/ruby/1.8/gems/mongrel-1.1.5/lib/mongrel.rb: 268:in `run'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/ action_controller/vendor/rack-1.0/rack/handler/mongrel.rb:34:in `run'     /Users/Gavin/.gem/ruby/1.8/gems/rails-2.3.2/lib/commands/server.rb: 111     /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'     /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'     script/server:3

Thanks for that Jason

It looks like the same issue - and I certainly get the 500 error when I paste the "?b%5Ba%5D=&b%5Ba%5Dc=" query in the address bar.

I'm not using WidgeEditor though

...

I changed my model name (and controller etc.) from item to print and that seems to have solved it!

I have no idea why though?