cannot register more than one contender

[st-atila]

A page (500 error) displays that states:

We're sorry, but something went wrong.
If you are the application owner check the logs for more information.

The program console terminal shows:

localuser@localuser-ThinkPad-T60 ~/pinewood-derby $ DERBY_ADMIN_KEY="mypass" TRACK_SENSOR_DEVICE=/dev/pts/4 rvmsudo -E foreman start
11:21:04 web.1  | started with pid 32659
11:21:05 web.1  | /home/localuser/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.0.beta1/lib/active_support/values/time_zone.rb:285: warning: circular argument reference - now
11:21:07 web.1  | I, [2015-02-10T11:21:07.637386 #32661]  INFO -- : Sensor watch started w/ device search path: "/dev/pts/4"
***NOTE-- here is where I added the first contestant, "c1".
11:24:12 web.1  | /home/localuser/.rvm/gems/ruby-2.2.0/gems/activerecord-4.1.0.beta1/lib/active_record/associations/has_many_association.rb:74: warning: circular argument reference - reflection
11:24:12 web.1  | /home/localuser/.rvm/gems/ruby-2.2.0/gems/activerecord-4.1.0.beta1/lib/active_record/associations/has_many_association.rb:78: warning: circular argument reference - reflection
11:24:12 web.1  | /home/localuser/.rvm/gems/ruby-2.2.0/gems/activerecord-4.1.0.beta1/lib/active_record/associations/has_many_association.rb:82: warning: circular argument reference - reflection
11:24:12 web.1  | /home/localuser/.rvm/gems/ruby-2.2.0/gems/activerecord-4.1.0.beta1/lib/active_record/associations/has_many_association.rb:101: warning: circular argument reference - reflection

And the LOG shows

I, [2015-02-10T11:48:27.560009 #15914]  INFO -- : Completed 200 OK in 22ms (Views: 17.9ms | ActiveRecord: 3.2ms)
I, [2015-02-10T11:48:27.669351 #15914]  INFO -- : Started GET "/faye" for 127.0.0.1 at 2015-02-10 11:48:27 -0800
I, [2015-02-10T11:48:27.694757 #15914]  INFO -- : Started POST "/faye" for 127.0.0.1 at 2015-02-10 11:48:27 -0800
I, [2015-02-10T11:48:31.457250 #15914]  INFO -- : Started POST "/contestants" for 127.0.0.1 at 2015-02-10 11:48:31 -0800
I, [2015-02-10T11:48:31.458644 #15914]  INFO -- : Processing by ContestantsController#create as HTML
I, [2015-02-10T11:48:31.458773 #15914]  INFO -- :   Parameters: {"utf8"=>"✓", "authenticity_token"=>"ZXvirzbPi6MUr7sHLXCoWWkRAM6O52MIuod8zQJpNlI=", "contestant"=>{"name"=>"c2"}, "commit"=>"Register"}
I, [2015-02-10T11:48:31.468510 #15914]  INFO -- : Completed 500 Internal Server Error in 10ms
F, [2015-02-10T11:48:31.472662 #15914] FATAL -- : 
NoMethodError (undefined method `name' for nil:NilClass):
  app/controllers/announce_controller.rb:19:in `block in <class:AnnounceController>'
  app/controllers/contestants_controller.rb:52:in `block in create'
  app/controllers/contestants_controller.rb:51:in `create'

[nilbus]

Investigating…

[nilbus]

I have reproduced the issue. Working on a fix.

[nilbus]

It looks like you hit a bug in the earlier version of Rails this was on! Fortunately it was fixed in a later release, and everything seems to be working now.

Update your gems by running bundle install, restart your mock_sensor and rails app server, and you should be set.

Thank you for reporting these issues!