diff --git a/config/userpref.blend b/config/userpref.blend
index c8102b3..feb0ce5 100644
Binary files a/config/userpref.blend and b/config/userpref.blend differ
diff --git a/scripts/addons/cam/chunk.py b/scripts/addons/cam/chunk.py
index 13ae58f..d75fb28 100644
--- a/scripts/addons/cam/chunk.py
+++ b/scripts/addons/cam/chunk.py
@@ -1,10 +1,4 @@
 import Polygon
-
-import shapely
-from shapely.geometry import polygon as spolygon
-from shapely import ops
-from shapely import geometry
-
 from cam import simple
 from cam.simple import * 
 
@@ -613,27 +607,6 @@ def parentChild(parents, children, o):
 					parent.children.append(child)
 					child.parents.append(parent)	
 
-def chunksToShapely(chunks):#this does more cleve chunks to Poly with hierarchies... ;)
-	#print ('analyzing paths')
-	#verts=[]
-	#pverts=[]
-	polys=[]
-	for ch in chunks:#first convert chunk to poly
-		if len(ch.points)>2:
-			pchunk=[]
-			for v in ch.points:
-				pchunk.append((v[0],v[1]))
-			ch.poly=spolygon.Polygon(pchunk)
-			#ch.poly.simplify()
-	
-		
-	returnpolys=[]
-
-	for ch in chunks:#export only the booleaned polygons
-		returnpolys.append(ch.poly)
-	#print(len(returnpolys))
-	return returnpolys  
-					
 def chunksToPolys(chunks):#this does more cleve chunks to Poly with hierarchies... ;)
 	#print ('analyzing paths')
 	#verts=[]
diff --git a/scripts/addons/cam/utils.py b/scripts/addons/cam/utils.py
index 6b9294a..fd40303 100644
--- a/scripts/addons/cam/utils.py
+++ b/scripts/addons/cam/utils.py
@@ -1278,11 +1278,7 @@ def curveToPolys(cob):
 	chunks=curveToChunks(cob)
 	polys=chunksToPolys(chunks)
 	return polys
-	
-def curveToShapely(cob):
-	chunks=curveToChunks(cob)
-	polys=chunksToShapely(chunks)
-	return polys
+
 #separate function in blender, so you can offset any curve.
 #FIXME: same algorithms as the cutout strategy, because that is hierarchy-respecting.