title: compass watch compiles once, fails to notice further changes
body: <p>I work with SASS + Compass on Windows 7. I recently upgraded SASS from 3.2.10 to 3.4.2 and Compass from 0.12.2 to 1.0.1. I did the upgrade by uninstalling the old versions and install the new versions using gem uninstall/install in the command prompt. </p>
  
  <p>Now when I make changes to an SCSS file after running compass watch, only the first set of changes is noticed and compiled. After that compass watch just looks like it's watching for changes but in reality no other changes after the first are noticed. I have to terminate (Ctrl+C) and rerun compass watch. Adding --poll to the command doesn't seem to help.</p>
  
  <p>This strange behavior wasn't happening before the upgrade.</p>
  
  <p>How can I fix this?</p>