It's seems like gem sauce-3.5.11 uses a deprecated 'within_frame' method.I have also tried to change to older version but I get the same error
undefined method `within_frame' for class `Sauce::Capybara::Driver' (NameError) /Users/user/.rvm/gems/ruby-2.2.4/gems/sauce-3.5.11/lib/sauce/capybara.rb:41:in `' /Users/user/.rvm/gems/ruby-2.2.4/gems/sauce-3.5.11/lib/sauce/capybara.rb:12:in `' /Users/user/.rvm/gems/ruby-2.2.4/gems/sauce-3.5.11/lib/sauce/capybara.rb:11:in `' /Users/user/.rvm/gems/ruby-2.2.4/gems/sauce-3.5.11/lib/sauce/capybara.rb:10:in `'
RubyGems Environment:
- RUBYGEMS VERSION: 2.4.8
- RUBY VERSION: 2.2.4 (2015-12-16 patchlevel 230) [x86_64-darwin14.5.0]
- INSTALLATION DIRECTORY: /Users/user/.rvm/gems/ruby-2.2.4
- RUBY EXECUTABLE: /Users/user/.rvm/rubies/ruby-2.2.4/bin/ruby
- EXECUTABLE DIRECTORY: /Users/user/.rvm/gems/ruby-2.2.4/bin
- SPEC CACHE DIRECTORY: /Users/user/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /Users/user/.rvm/rubies/ruby-2.2.4/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-14
- GEM PATHS:
- /Users/user/.rvm/gems/ruby-2.2.4
- /Users/user/.rvm/gems/ruby-2.2.4@global
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /Users/user/.rvm/gems/ruby-2.2.4/bin
- /Users/user/.rvm/gems/ruby-2.2.4@global/bin
- /Users/user/.rvm/rubies/ruby-2.2.4/bin
- /Users/user/.rvm/bin
- /usr/local/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /opt/X11/bin