Merge branch 'refs/heads/NinjaInternal' into FileIO

1 files changed, 1 insertions, 0 deletions

diff --git a/js/helper-classes/3D/snap-manager.js b/js/helper-classes/3D/snap-manager.js
index 2922edf9..94202dc5 100755
--- a/js/helper-classes/3D/snap-manager.js
+++ b/js/helper-classes/3D/snap-manager.js
@@ -1087,6 +1087,7 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
 
                         // we need to check the orientation of the bounds
                         var nrm = MathUtils.getNormalFromBounds3D( bounds3D );
+                        if (MathUtils.fpSign(nrm[2]) == 0)  return null;
                         var zNrm = nrm[2];
                         var dist;