Error on grunt build

[timwis]

Any idea why I'm getting this error? Tried googling it, but it looks like most people got it due to an older version of grunt. I just installed grunt today via npm install -g grunt so it can't be old...

Running "cssmin:combine" (cssmin) task
Verifying property cssmin.combine exists in config...OK
Files: temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css, temp/styles/styles/lib/widget.min.css, temp/styles/styles/styles.min.css -> build/styles/opa.min.css
Reading temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css...OK
Reading temp/styles/styles/lib/widget.min.css...OK
Reading temp/styles/styles/styles.min.css...OK
Reading temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css...OK
Reading temp/styles/styles/lib/widget.min.css...OK
Reading temp/styles/styles/styles.min.css...OK
Writing build/styles/opa.min.css...OK
File build/styles/opa.min.css created.

Running "copy:main" (copy) task
Verifying property copy.main exists in config...OK
Warning: Arguments to path.resolve must be strings Use --force to continue.

[timwis]

Using grunt-cli v0.1.9 and grunt v0.4.1. It seems to work when I include --force in the command line, but it doesn't copy the images/ dir or scripts/lib/ over. The issue must lie there... here's the full console log.

Running "clean:build" (clean) task
Cleaning build/...OK

Running "clean:temp" (clean) task
Cleaning temp/...OK

Running "requirejs:compile" (requirejs) task
[Details omitted by Tim]

Running "cssmin:minify" (cssmin) task
File temp/styles/styles/styles.min.css created.
File temp/styles/styles/lib/widget.min.css created.
File temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css created.

Running "cssmin:combine" (cssmin) task
File build/styles/opa.min.css created.

Running "copy:main" (copy) task
Warning: Arguments to path.resolve must be strings Used --force, continuing.

Running "processhtml:dist" (processhtml) task
File "temp/index.html" created.

Running "htmlmin:build" (htmlmin) task
File build/index.html created.

Running "clean:temp" (clean) task
Cleaning temp/...OK

[davewalk]

Can you run it again with grunt --verbose (I think that's it) and include the output here?

[timwis]

Initializing
Command-line options: --verbose

Reading "Gruntfile.js" Gruntfile...OK

Registering Gruntfile tasks.
Initializing config...OK

Registering "grunt-contrib-requirejs" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-requirejs/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-requirejs/package.json...OK
Loading "requirejs.js" tasks...OK
+ requirejs

Registering "grunt-contrib-cssmin" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-cssmin/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-cssmin/package.json...OK
Loading "cssmin.js" tasks...OK
+ cssmin

Registering "grunt-contrib-copy" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-copy/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-copy/package.json...OK
Loading "copy.js" tasks...OK
+ copy

Registering "grunt-contrib-clean" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-clean/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-clean/package.json...OK
Loading "clean.js" tasks...OK
+ clean

Registering "grunt-processhtml" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-processhtml/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-processhtml/package.json...OK
Loading "processhtml.js" tasks...OK
+ processhtml

Registering "grunt-contrib-htmlmin" local Npm module tasks.
Reading /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-htmlmin/package.json...OK
Parsing /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/node_modules/grunt-contrib-htmlmin/package.json...OK
Loading "htmlmin.js" tasks...OK
+ htmlmin
Loading "Gruntfile.js" tasks...OK
+ default

No tasks specified, running default tasks.
Running tasks: default

Running "default" task

Running "clean:build" (clean) task
Verifying property clean.build exists in config...OK
Files: build/ -> build
Options: force=false, no-write=false
Cleaning build/...OK

Running "clean:temp" (clean) task
Verifying property clean.temp exists in config...OK
Files: [no src] -> temp
Options: force=false, no-write=false

Running "requirejs" task

Running "requirejs:compile" (requirejs) task
Verifying property requirejs.compile exists in config...OK
File: [no files]
Options: logLevel=0, done=undefined, name="main", baseUrl="./scripts", mainConfigFile="./scripts/main.js", out="./build/scripts/main.js", optimize="uglify", paths={"jquery":"//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min","underscore":"//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.4/underscore-min","backbone":"//cdnjs.cloudflare.com/ajax/libs/backbone.js/1.0.0/backbone-min","jquery-bootstrap":"//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/js/bootstrap.min"}
>> Tracing dependencies for: main
>> Cannot optimize network URL, skipping:
>> //ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js
>> Cannot optimize network URL, skipping:
>> //cdnjs.cloudflare.com/ajax/libs/underscore.js/1.4.4/underscore-min.js
>> Cannot optimize network URL, skipping:
>> //cdnjs.cloudflare.com/ajax/libs/backbone.js/1.0.0/backbone-min.js
>> Cannot optimize network URL, skipping:
>> //cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/js/bootstrap.min.js
>> Uglifying file:
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/buil
>> d/scripts/main.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/buil
>> d/scripts/main.js
>> ----------------
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/util.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/models/property.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/collections/search-results.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/text.js
>> text!templates/home.html
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/home.js
>> text!templates/disclaimer.html
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/disclaimer.js
>> text!templates/property.html
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/property.js
>> text!templates/search-results.html
>> text!templates/search-results-row.html
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/search-results-row.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/search-results.js
>> text!templates/error.html
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/views/error.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/router.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/lib/jquery.cookie.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/app.js
>> /var/lib/stickshift/525eade84382ec97b700015f/app-root/data/473302/public/scri
>> pts/main.js

Running "cssmin" task

Running "cssmin:minify" (cssmin) task
Verifying property cssmin.minify exists in config...OK
Files: styles/styles.css -> temp/styles/styles/styles.min.css
Files: styles/lib/widget.css -> temp/styles/styles/lib/widget.min.css
Files: styles/lib/bootstrap-philagov/bootstrap-philagov.css -> temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css
Reading styles/styles.css...OK
Reading styles/styles.css...OK
Writing temp/styles/styles/styles.min.css...OK
File temp/styles/styles/styles.min.css created.
Reading styles/lib/widget.css...OK
Reading styles/lib/widget.css...OK
Writing temp/styles/styles/lib/widget.min.css...OK
File temp/styles/styles/lib/widget.min.css created.
Reading styles/lib/bootstrap-philagov/bootstrap-philagov.css...OK
Reading styles/lib/bootstrap-philagov/bootstrap-philagov.css...OK
Writing temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css...OK
File temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css created.

Running "cssmin:combine" (cssmin) task
Verifying property cssmin.combine exists in config...OK
Files: temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css, temp/styles/styles/lib/widget.min.css, temp/styles/styles/styles.min.css -> build/styles/opa.min.css
Reading temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css...OK
Reading temp/styles/styles/lib/widget.min.css...OK
Reading temp/styles/styles/styles.min.css...OK
Reading temp/styles/styles/lib/bootstrap-philagov/bootstrap-philagov.min.css...OK
Reading temp/styles/styles/lib/widget.min.css...OK
Reading temp/styles/styles/styles.min.css...OK
Writing build/styles/opa.min.css...OK
File build/styles/opa.min.css created.

Running "copy:main" (copy) task
Verifying property copy.main exists in config...OK
Warning: Arguments to path.resolve must be strings Use --force to continue.

Aborted due to warnings.