AR serialize json stacktrace

gistfile1.txt

TypeError: no implicit conversion of Hash into String
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/json-1.8.2/lib/json/common.rb:155:in `initialize'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/json-1.8.2/lib/json/common.rb:155:in `new'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/json-1.8.2/lib/json/common.rb:155:in `parse'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/json/decoding.rb:26:in `decode'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/coders/json.rb:9:in `load'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/type/serialized.rb:19:in `type_cast_from_database'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/type/mutable.rb:5:in `type_cast_from_user'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute.rb:110:in `type_cast'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute.rb:42:in `original_value'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute.rb:37:in `value'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute.rb:50:in `changed_from?'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute_methods/dirty.rb:141:in `_field_changed?'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute_methods/dirty.rb:114:in `save_changed_attribute'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute_methods/dirty.rb:98:in `write_attribute'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activerecord-4.2.1/lib/active_record/attribute_methods.rb:50:in `__temp__36f6d6d656e64737'
	from (irb):3
... 10 levels...
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/commands/rails.rb:6:in `call'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/command_wrapper.rb:38:in `call'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:183:in `block in serve'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:156:in `fork'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:156:in `serve'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:131:in `block in run'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:125:in `loop'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application.rb:125:in `run'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/spring-1.3.6/lib/spring/application/boot.rb:18:in `<top (required)>'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
	from /Users/loganleger/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'