From f58a3d4401028679278fb0fde9219e444059e354 Mon Sep 17 00:00:00 2001
From: Uwe Kindler <uwe_kindler@web.de>
Date: Wed, 3 Jun 2020 19:53:17 +0200
Subject: [PATCH] Change to support loading of older files without UserVersion
 atribute

---
 src/DockManager.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/DockManager.cpp b/src/DockManager.cpp
index 1b8162f..d2a2a0b 100644
--- a/src/DockManager.cpp
+++ b/src/DockManager.cpp
@@ -251,10 +251,15 @@ bool DockManagerPrivate::restoreStateFromXml(const QByteArray &state,  int versi
     }
 
     ADS_PRINT(s.attributes().value("UserVersion"));
-    v = s.attributes().value("UserVersion").toInt(&ok);
-    if (!ok || v != version)
+    // Older files do not support UserVersion but we still want to load them so
+    // we first test if the attribiute exists
+    if (!s.attributes().value("UserVersion").isEmpty())
     {
-    	return false;
+		v = s.attributes().value("UserVersion").toInt(&ok);
+		if (!ok || v != version)
+		{
+			return false;
+		}
     }
 
     s.setFileVersion(v);