knife error received when pointing chef 0.9.14 gem to 0.9.8 server

knife error

~ ➤ knife node list                                                                                                                                                                                                      
/Library/Ruby/Site/1.8/rubygems.rb:267:in `activate': can't activate mixlib-log (= 1.1.0) for [], already activated mixlib-log-1.2.0 for [] (Gem::LoadError)
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:46:in `require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:45:in `each'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:45:in `require'
	from /Library/Ruby/Gems/1.8/gems/chef-0.9.14/lib/chef/log.rb:21
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `gem_original_require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
	from /Library/Ruby/Gems/1.8/gems/chef-0.9.14/lib/chef/config.rb:20
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `gem_original_require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
	from /Library/Ruby/Gems/1.8/gems/chef-0.9.14/lib/chef/application.rb:18
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `gem_original_require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
	from /Library/Ruby/Gems/1.8/gems/chef-0.9.14/lib/chef/application/knife.rb:19
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `gem_original_require'
	from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:49:in `require'
	from /Library/Ruby/Gems/1.8/gems/chef-0.9.14/bin/knife:23
	from /usr/bin/knife:19:in `load'
	from /usr/bin/knife:19