translation center compatiblity with no sql application

[helsayed]

when running
rake translation_center:synch
it crash with this exception
ActiveRecord::ConnectionNotEstablished
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:541:in retrieve_connection' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/connection_handling.rb:113:inretrieve_connection'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/connection_handling.rb:87:in connection' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/model_schema.rb:214:incolumns'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/model_schema.rb:260:in column_names' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation/calculations.rb:229:inaggregate_column'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation/calculations.rb:252:in execute_simple_calculation' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation/calculations.rb:224:inperform_calculation'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation/calculations.rb:119:in calculate' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation/calculations.rb:34:incount'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation.rb:251:in empty?' /home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/relation.rb:261:inany?'
/home/hussein/.rvm/gems/ruby-2.0.0-p481@scribble_pro/gems/activerecord-4.1.5/lib/active_record/querying.rb:3:in any?' /home/hussein/badrit_projects/translation_center/lib/tasks/translation_center.rake:43:inblock (2 levels) in <top (required)>'

I'm working with rails 4 and mongo db