Polymer-CLI: $ polymer build ... Unable to uglify file ... bower_components/**/*
<p>Here's my setup...</p>

<hr>

<p><strong>OS:</strong> Windows 10 (64-bit)<br>
<strong>Git SCM:</strong> 2.7.0 (MINGW64)<br>
<strong>Node:</strong> 6.3.0<br>
<strong>Polymer-CLI:</strong> 0.12.0</p>

<hr>

<pre><code>Oneeezy@Oneezy MINGW64 ~/Desktop/www_/_clients/diesel/wwwSFI (default)
$ polymer build

info:    Building application...
info:    Generating build/unbundled...
info:    Generating build/bundled...

warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\demo\index.html_script_0.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\test\marked-element.html_script_0.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\test\marked-element.html_script_1.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\test\marked-element.html_script_2.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\test\marked-element.html_script_3.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\marked-element\test\marked-element.html_script_4.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\web-component-tester\data\index.html_script_0.js
warn:    Unable to uglify file C:\Users\Oneeezy\Desktop\www_\_clients\diesel\wwwSFI\bower_components\web-component-tester\data\index.html_script_2.js

info:    Generating service workers...
info:    Build complete!

Oneeezy@Oneezy MINGW64 ~/Desktop/www_/_clients/diesel/wwwSFI (default)
</code></pre>

<p>Any ideas?</p>