fastlane: undefined method `[]=' for nil:NilClass for sigh manage

New Issue Checklist

• [Y] Updated fastlane to the latest version
• [Y] I have read the Contribution Guidelines

Issue Description

Error received when attempting to run sigh manage

Complete output when running fastlane, including the stack trace and command used

$sigh manage
INFO [2016-10-26 09:55:52.19]: Loading Provisioning profiles from ~/Library/MobileDevice/Provisioning Profiles/

Looking for related GitHub issues on fastlane/fastlane...
Search query: undefined method `[]=' for nil

URL: https://api.github.com/search/issues?q=undefined%20method%20%60[]='%20for%20nil+repo:fastlane/fastlane
➡️  undefined method `[]=' for nil:NilClass for sigh manage
   https://github.com/fastlane/fastlane/issues/6751 [open] 0 💬
   8 minutes ago

➡️  undefined method `<<' for nil:NilClass
   https://github.com/fastlane/fastlane/issues/6731 [closed] 5 💬
   11 hours ago

➡️  Pilot tool is crashing with undefined method 'strip' for nil:NilClass (NoMethodError)
   https://github.com/fastlane/fastlane/issues/3238 [open] 0 💬
   6 weeks ago

and 182 more at: https://github.com/fastlane/fastlane/search?q=undefined%20method%20%60[]='%20for%20nil&type=Issues&utf8=✓
/Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/local_manage.rb:130:in `block in load_profiles': [!] undefined method `[]=' for nil:NilClass (NoMethodError)
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/local_manage.rb:128:in `each'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/local_manage.rb:128:in `load_profiles'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/local_manage.rb:45:in `list_profiles'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/local_manage.rb:9:in `start'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/commands_generator.rb:114:in `block (2 levels) in run'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/commander-4.4.0/lib/commander/command.rb:178:in `call'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/commander-4.4.0/lib/commander/command.rb:153:in `run'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/commander-4.4.0/lib/commander/runner.rb:444:in `run_active_command'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/fastlane_core-0.53.0/lib/fastlane_core/ui/fastlane_runner.rb:38:in `run!'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/commander-4.4.0/lib/commander/delegates.rb:15:in `run!'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/commands_generator.rb:120:in `run'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/lib/sigh/commands_generator.rb:11:in `start'
        from /Users/ffadmin/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/sigh-1.11.2/bin/sigh:6:in `<top (required)>'
        from /Users/ffadmin/.rbenv/versions/2.3.1/bin/sigh:22:in `load'
        from /Users/ffadmin/.rbenv/versions/2.3.1/bin/sigh:22:in `<main>'

Environment

Please run fastlane env and copy the output below. This will help us help you 👍

Stack

Key	Value
OS	10.12.1
Ruby	2.3.1
Bundler?	false
Xcode Path	/Applications/Xcode.app/Contents/Developer/
Xcode Version	8.0
Git	git version 2.8.4 (Apple Git-73)
Installation Source	/Users/ffadmin/.rbenv/versions/2.3.1/bin/fastlane
Host	Mac OS X 10.12.1 (16B2555)
Ruby Lib Dir	/Users/ffadmin/.rbenv/versions/2.3.1/lib
OpenSSL Version	OpenSSL 1.0.2j 26 Sep 2016

fastlane files:

No Fastfile found

No Appfile found

fastlane gems

Gem	Version	Update-Status
credentials_manager	0.16.2	✅ Up-To-Date
spaceship	0.36.2	✅ Up-To-Date
fastlane_core	0.53.0	✅ Up-To-Date
deliver	1.14.5	✅ Up-To-Date
snapshot	1.16.2	✅ Up-To-Date
frameit	3.0.0	✅ Up-To-Date
pem	1.3.2	✅ Up-To-Date
cert	1.4.3	✅ Up-To-Date
sigh	1.11.2	✅ Up-To-Date
produce	1.2.1	✅ Up-To-Date
gym	1.11.3	✅ Up-To-Date
pilot	1.11.1	✅ Up-To-Date
scan	0.13.1	✅ Up-To-Date
supply	0.7.1	✅ Up-To-Date
match	0.10.0	✅ Up-To-Date
screengrab	0.5.5	✅ Up-To-Date
fastlane	1.106.2	✅ Up-To-Date

Loaded fastlane plugins:

No plugins Loaded*

Loaded gems

Gem	Version
did_you_mean	1.0.0
highline	1.7.8
commander	4.4.0
terminal-table	1.4.5
json	1.8.3
multipart-post	2.0.0
faraday	0.9.2
faraday_middleware	0.10.0
dotenv	2.1.1
net-ssh	3.2.0
net-sftp	2.1.2
plist	3.1.0
rubyzip	1.1.7
security	0.1.3
krausefx-shenzhen	0.14.10
slack-notifier	1.5.1
i18n	0.7.0
thread_safe	0.3.5
tzinfo	1.2.2
minitest	5.8.3
activesupport	4.2.7.1
colored	1.2
claide	1.0.1
xcodeproj	1.3.3
rouge	1.11.1
xcpretty	0.2.4
terminal-notifier	1.7.1
addressable	2.3.8
credentials_manager	0.16.2
multi_xml	0.5.5
unf_ext	0.0.7.2
unf	0.1.4
domain_name	0.5.20160826
http-cookie	1.0.3
faraday-cookie_jar	0.0.6
fastimage	1.6.8
xcode-install	2.0.8
word_wrap	1.0.0
multi_json	1.12.1
babosa	1.0.2
excon	0.54.0
gh_inspector	1.0.2
fastlane_core	0.53.0
bundler	1.13.6
mini_magick	4.5.1
xcpretty-travis-formatter	0.0.4
uber	0.0.15
representable	2.3.0
retriable	2.1.0
mime-types-data	3.2016.0521
mime-types	3.1
hurley	0.2
little-plugger	1.1.4
logging	2.1.0
jwt	1.5.6
memoist	0.15.0
os	0.9.6
signet	0.7.3
googleauth	0.5.1
httpclient	2.8.2.4
google-api-client	0.9.19
io-console	0.4.5