SDK 3.1.0 GA and still getting "Arguments to path.join must be strings

Environment:

• Ti CLI version 3.1.0
• Ti SDK version 3.1.0.GA
• Ti Studio version 3.1.0.201304151600
• Ti Node.js version 10.0.4
• Ti Xcode version 4.6.2 (4H1003)
• Ti OSX 10.8.3

When I attempt to build for the 'iPhone Simulator', I get the following:

[ERROR] :  TypeError: Cannot read property '0' of undefined
    at exports.detect.async.parallel.result (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/node-appc/lib/ios.js:198:52)
    at Array.forEach (native)
    at exports.detect.async.parallel.result (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/node-appc/lib/ios.js:181:43)
    at async.parallel.results (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:454:21)
    at _asyncMap (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:185:13)
    at async.forEach (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:86:13)
    at Array.forEach (native)
    at _forEach (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:26:24)
    at async.forEach (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:85:9)
    at _asyncMap (/Users/user/Library/Application Support/Titanium/mobilesdk/osx/3.1.0.GA/node_modules/async/lib/async.js:184:9)
[ERROR] Unable to find command "build"

I have read the posts about the compatibility of Node.js 10.x with 3.0.x, but as you can see I am on the latest versions of everything and am still struggling ...