# SystemStackError (stack level too deep) when creating new AR **URL:** \ **Category:** rubyonrails-talk\ **Created:** [September 12, 2006, 11:40am UTC](https://discuss.rubyonrails.org/t/systemstackerror-stack-level-too-deep-when-creating-new-ar/1490 "2006-09-12T11:40:36Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Arsen7](https://avatars.discourse-cdn.com/v4/letter/a/57b2e6/32.png) [@Arsen7](https://discuss.rubyonrails.org/u/Arsen7)\ **Post date:** [September 12, 2006, 11:40am UTC](https://discuss.rubyonrails.org/t/systemstackerror-stack-level-too-deep-when-creating-new-ar/1490/1 "2006-09-12T11:40:36Z")
Hi. I have a problem with very deep calls, causing SystemStackError. The logs are on [Parked at Loopia](http://pastie.caboo.se/12890) It scares me, because I don't understand it's cause, and I fear it may strike on production (in case it disappears in development 😉 ) Tests are passing without disturbance. Maybe it's because of webrick, as it creates almost half of the call-trace? I plan to use fastcgi later. ---
**Author:** ![11175](https://avatars.discourse-cdn.com/v4/letter/1/8edcca/32.png) [@11175](https://discuss.rubyonrails.org/u/11175)\ **Post date:** [February 29, 2008, 4:57pm UTC](https://discuss.rubyonrails.org/t/systemstackerror-stack-level-too-deep-when-creating-new-ar/1490/2 "2008-02-29T16:57:17Z")
I got this odd error when using the console, however a restart of the console fixes it. Any thoughts? Note that the stack level is only like 20 deep, and I have tested it and it can go (typically) to thousands deep. So something must be using up tons of stack space? exceptionstack level too deepSystemStackError: stack level too deep   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:1983:in `=='   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1983:in `==='   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:1983:in `convert_number_column_value'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1973:in `write\_attribute'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/attribute\_methods.rb:67:in `attribute='   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1855:in `\_\_send\_\_'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:1855:in `method_missing'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1672:in `send'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:1672:in `attributes='   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1671:in `each'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:1671:in `attributes='   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1505:in `initialize\_without\_callbacks'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/callbacks.rb:225:in `initialize'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:449:in `new'   from /opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active\_record/base.rb:449:in `create'   from ./db/add_multiple_zips.rb:425   from ./db/add_multiple_zips.rb:415:in `each\_line'   from ./db/add\_multiple\_zips.rb:415   from ./db/add\_multiple\_zips.rb:400:in `each'   from ./db/add_multiple_zips.rb:400   from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:493:in `load'   from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:493:in `load'   from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:345:in `new\_constants\_in'   from /opt/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:493:in `load'   from (irb):25\>\> Arsen7 wrote: