Hey Guys, like many other people I've had issues with previewing. It's happened lately even with r103.2 for a big project (smaller ones seem to be ok). I tried scouring the forums for an answer including a couple of the tutorials that instructed me on opening up firewalls ports and stuff but nothing seemed to work.
I finally decided to try an alternative. Basically what I did was:
1. downloaded wampserver (http://www.wampserver.com/en/)
2. installed it (very easy),
3. then exported my project un-minified to the "www" directory under where wamp was installed.
Then I was able to browse straight to "localhost/c2game" and woohoo! works everytime