Searching for your error message via Google (which you could have done by yourself, already) gives lots of relevant results. All of them indicate that somehow your Config.pm is broken. Maybe it comes broken already by default. Most likely, there is a path ending in Perl\\lib where it should be Perl\\lib\\.

As that error seems to happen not only to you, my guess is that the Perl installation that comes with Apache2Triad is broken. You can either try to fix Config.pm or use another Perl distribution, like the original ActiveState Perl distribution, or Strawberry Perl.