Running 'Rails console... get permission denied when it attempts to open irb

RubyMine 2016.3
Build #RM-163.7743.60, built on November 28, 2016
Subscription is active until July 9, 2018
JRE: 1.8.0_112-release-408-b2 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o

On OSX Yosemite

Here's the log output when I attempt to launch Rails console in debug:

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/Users/SSmith/.rvm/rubies/ruby-1.8.7-p358/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/SSmith/work/hedgeye-cms/script/console --irb=/Applications/RubyMine.app/Contents/rb/testing/runner/irb.rb development
sh: /Applications/RubyMine.app/Contents/rb/testing/runner/irb.rb: Permission denied
Loading development environment (Rails 2.3.18)

Process finished with exit code 126

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I have variations of the problem back at the "official 2016 2" release.

This is on a brand-new RC release, so maybe a bug was introduced?

How do I get around this?  Thanks in advance.