diff -r c72e3115a297 -r 67c6e5d32e68 src/ldObject.cpp
--- a/src/ldObject.cpp	Sun Jan 29 15:49:36 2017 +0200
+++ b/src/ldObject.cpp	Sun Jan 29 21:02:11 2017 +0200
@@ -347,7 +347,7 @@
 // -----------------------------------------------------------------------------
 void LDSubfileReference::inlineContents(Model& model, bool deep, bool render)
 {
-	Model inlined;
+	Model inlined {this->model()->documentManager()};
 	fileInfo()->inlineContents(inlined, deep, render);
 
 	// Transform the objects
@@ -545,7 +545,7 @@
 
 	// Check whether subfile is flat
 	int axisSet = (1 << X) | (1 << Y) | (1 << Z);
-	Model model;
+	Model model {this->model()->documentManager()};
 	fileInfo()->inlineContents(model, true, false);
 
 	for (LDObject* obj : model.objects())
@@ -960,14 +960,6 @@
 	return result;
 }
 
-// =============================================================================
-//
-LDObject* LDObject::createCopy() const
-{
-	LDObject* copy = ParseLine (asText());
-	return copy;
-}
-
 LDSubfileReference::LDSubfileReference(LDDocument* reference, const Matrix& transformationMatrix,
                                        const Vertex& position, Model* model) :
     LDMatrixObject {transformationMatrix, position, model},