From 7e092db8982bfacc243a6103f0f35ff5a2172244 Mon Sep 17 00:00:00 2001
From: Bernd Hahnebach <bernd@bimstatik.org>
Date: Mon, 6 Jun 2016 06:35:00 +0200
Subject: [PATCH] FEM: fix for importing ccx result mesh

---
 src/Mod/Fem/ccxFrdReader.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Mod/Fem/ccxFrdReader.py b/src/Mod/Fem/ccxFrdReader.py
index 4464be2d2..656869023 100644
--- a/src/Mod/Fem/ccxFrdReader.py
+++ b/src/Mod/Fem/ccxFrdReader.py
@@ -306,6 +306,8 @@ def calculate_von_mises(i):
 
 
 def importFrd(filename, analysis=None, result_name_prefix=None):
+    if result_name_prefix is None:
+        result_name_prefix = ''
     m = readResult(filename)
     mesh_object = None
     if(len(m['Nodes']) > 0):