From 29edb4f75cab29d9d81f2ddff9546cd7f531627a Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Wed, 30 Sep 2015 11:26:56 +0200
Subject: [PATCH] Fixes #1440

---
 lib/core/common.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/core/common.py b/lib/core/common.py
index c52441c70..6ff973a58 100755
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -2809,7 +2809,13 @@ def unArrayizeValue(value):
     """
 
     if isListLike(value):
-        value = value[0] if len(value) > 0 else None
+        if not value:
+            value = None
+        elif len(value) == 1 and not isListLike(value[0]):
+            value = value[0]
+        else:
+            _ = filter(lambda _: _ is not None, (_ for _ in flattenValue(value)))
+            value = _[0] if len(_) > 0 else None
 
     return value