ERROR in bin/rake community_engine:install:migrations about communityengine

[daveyliu]

HERE IS THE TRACE FOR IT

your_app_name rui_y$ bin/rake community_engine:install:migrations --trace
rake aborted!
undefined method merge_joins' for classClass'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/core_ext/module/aliasing.rb:31:in alias_method' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.1.0/lib/active_support/core_ext/module/aliasing.rb:31:inalias_method_chain'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic/active_record/consistency.rb:8:in block in included' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic/active_record/consistency.rb:7:inclass_eval'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic/active_record/consistency.rb:7:in included' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic.rb:34:ininclude'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic.rb:34:in singletonclass' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic.rb:34:inclass:Base'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic.rb:33:in <module:ActiveRecord>' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/searchlogic-2.4.28/lib/searchlogic.rb:26:in<top (required)>'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in require' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:inblock (2 levels) in require'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in each' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:inblock in require'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in each' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:inrequire'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/bundler-1.0.21/lib/bundler.rb:122:in require' /Users/rui_y/your_app_name/config/application.rb:7:in<top (required)>'
/Users/rui_y/your_app_name/Rakefile:5:in require' /Users/rui_y/your_app_name/Rakefile:5:in<top (required)>'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_module.rb:25:in load' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/rake_module.rb:25:inload_rakefile'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:495:in raw_load_rakefile' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:78:inblock in load_rakefile'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:129:in standard_exception_handling' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:77:inload_rakefile'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:61:in block in run' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:129:instandard_exception_handling'
/Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/application.rb:59:in run' /Users/rui_y/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/bin/rake:32:in<top (required)>'

also i did a google search and saw that search logic wasnt compatiable with rails3 is that why im getting this error?