Failed to launch child process

[amrutab]

When I try to run a test on Chrome (selenium / Ruby) then I get the following error.

Error :-
Background: Login to app # tests\integration\channels.feature:3
[6100:7920:1028/134946:ERROR:child_process_launcher.cc(533)] Failed to launch child process
[6100:9520:1028/134946:ERROR:child_process_launcher.cc(533)] Failed to launch child process
[6100:9520:1028/134946:ERROR:child_process_launcher.cc(533)] Failed to launch child process
[6100:9520:1028/134949:ERROR:child_process_launcher.cc(533)] Failed to launch child process
[6100:9520:1028/134955:ERROR:child_process_launcher.cc(533)] Failed to launch child process
[6100:9520:1028/135006:ERROR:child_process_launcher.cc(533)] Failed to launch child process
rake aborted!

Following are the gems installed:-
*** LOCAL GEMS ***

bigdecimal (default: 1.2.0)
builder (3.2.2)
bundle (0.0.1)
bundler (1.13.6, 1.11.2)
childprocess (0.5.0)
cucumber (2.4.0, 1.3.2)
cucumber-core (1.5.0)
cucumber-wire (0.0.1)
debase (0.2.1, 0.1.4)
debase-ruby_core_source (0.9.2)
diff-lcs (1.2.5)
ffi (1.9.14 x86-mingw32)
gherkin (4.0.0, 2.12.2 x86-mingw32)
io-console (default: 0.4.2)
json (2.0.2, default: 1.7.7)
minitest (default: 4.3.2)
multi_json (1.12.1, 1.11.2)
multi_test (0.1.2)
parallel (1.6.1)
parallel_tests (1.3.7)
psych (default: 2.0.0)
rake (10.1.0, default: 0.9.6)
rdoc (default: 4.0.0)
ruby-debug-ide (0.6.0, 0.4.32)
rubyzip (1.2.0, 1.1.7)
selenium-webdriver (2.52.0, 2.48.0, 2.46.2)
test-unit (default: 2.0.0.0)
websocket (1.2.3, 1.2.2)

I am using:-
ruby '2.0.0'

gem 'cucumber', '1.3.2'
gem 'selenium-webdriver', '2.53.0'
gem 'rake', '10.1.0'
gem 'appium_lib', '8.0.2'
gem 'json', '1.8.3'

gem 'parallel_tests', '1.3.7'