Error with Compass on running server

[Cogiva]

After I install everything (all works fine as far as I can tell), when I un grunt server I get the following error:

Running "concurrent:server" (concurrent) task
    Warning:
    D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_modules\grunt-con
trib-compass\node_modules\tmp\lib\tmp.js:261
      throw err;
            ^
    TypeError: Cannot read property 'stdout' of undefined
        at compile (D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_m
odules\grunt-contrib-compass\tasks\compass.js:37:10)
        at D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_modules\gr
unt-contrib-compass\tasks\compass.js:68:7
        at D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_modules\gr
unt-contrib-compass\tasks\lib\compass.js:121:11
        at _fileCreated (D:\Dropbox\Uncontrolled_Projects\angular-with-compass\n
ode_modules\grunt-contrib-compass\node_modules\tmp\lib\tmp.js:172:7)
        at D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_modules\gr
unt-google-cdn\node_modules\bower\node_modules\rimraf\node_modules\graceful-fs\g
raceful-fs.js:53:5
        at D:\Dropbox\Uncontrolled_Projects\angular-with-compass\node_modules\gr
unt-google-cdn\node_modules\bower\node_modules\rimraf\node_modules\graceful-fs\g
raceful-fs.js:62:5
        at Object.oncomplete (fs.js:107:15) Use --force to continue.

    Aborted due to warnings.

Any idea why compass would be causing an issue? When I install without Compass, it all works fine, including the build.