diff --git a/cura/ConvexHullJob.py b/cura/ConvexHullJob.py
index 3832e53df6..8369d050c8 100644
--- a/cura/ConvexHullJob.py
+++ b/cura/ConvexHullJob.py
@@ -38,7 +38,6 @@ class ConvexHullJob(Job):
             vertex_data = mesh.getTransformed(self._node.getWorldTransformation()).getVertices()
             # Don't use data below 0. TODO; We need a better check for this as this gives poor results for meshes with long edges.
             vertex_data = vertex_data[vertex_data[:,1]>0]
-
             hull = Polygon(numpy.rint(vertex_data[:, [0, 2]]).astype(int))
 
         # First, calculate the normal convex hull around the points
@@ -59,7 +58,7 @@ class ConvexHullJob(Job):
         self._node.callDecoration("setConvexHullNode", hull_node)
         self._node.callDecoration("setConvexHull", hull)
         self._node.callDecoration("setConvexHullJob", None)
-        
+
         if self._node.getParent().callDecoration("isGroup"):
             job = self._node.getParent().callDecoration("getConvexHullJob")
             if job:
diff --git a/cura/ConvexHullNode.py b/cura/ConvexHullNode.py
index e24d79522c..d610149072 100644
--- a/cura/ConvexHullNode.py
+++ b/cura/ConvexHullNode.py
@@ -30,14 +30,14 @@ class ConvexHullNode(SceneNode):
         self._hull = hull
 
         hull_points = self._hull.getPoints()
-        center = (hull_points.min(0) + hull_points.max(0)) / 2.0
-
         mesh = MeshData()
-        mesh.addVertex(center[0], 0.1, center[1])
-
+        if len(hull_points) > 3:
+            center = (hull_points.min(0) + hull_points.max(0)) / 2.0
+            mesh.addVertex(center[0], 0.1, center[1])
+        else: #Hull has not enough points
+            return
         for point in hull_points:
             mesh.addVertex(point[0], 0.1, point[1])
-
         indices = []
         for i in range(len(hull_points) - 1):
             indices.append([0, i + 1, i + 2])
diff --git a/cura/PlatformPhysics.py b/cura/PlatformPhysics.py
index f1fc7fd0b1..ee6e39f03b 100644
--- a/cura/PlatformPhysics.py
+++ b/cura/PlatformPhysics.py
@@ -113,8 +113,10 @@ class PlatformPhysics:
                     
                     move_vector.setX(overlap[0] * 1.1)
                     move_vector.setZ(overlap[1] * 1.1)
-            convex_hull = node.callDecoration("getConvexHull") 
+            convex_hull = node.callDecoration("getConvexHull")
             if convex_hull:
+                if not convex_hull.isValid():
+                    return
                 # Check for collisions between disallowed areas and the object
                 for area in self._build_volume.getDisallowedAreas():
                     overlap = convex_hull.intersectsPolygon(area)