--- C:/InkscapeBZR/src/live_effects/lpe-powerstroke_org.cpp	Sun Jul  5 19:06:52 2015
+++ C:/InkscapeBZR/src/live_effects/lpe-powerstroke.cpp	Thu Jul 16 18:08:04 2015
@@ -49,7 +49,7 @@ static boost::optional<Point> intersection_point(
 {
     Coord denom = cross(vector_a, vector_b);
     if (!are_near(denom,0.)){
-        Coord t = (cross(origin_b, vector_a) + cross(origin_b, vector_b)) / denom;
+        Coord t = (cross(vector_b, origin_a) + cross(origin_b, vector_b)) / denom;
         return origin_a + t * vector_a;
     }
     return boost::none;