From dd78ad7e72d58e7fb17dccb11620a42e9f27772c Mon Sep 17 00:00:00 2001
From: Yorik van Havre <yorik@uncreated.net>
Date: Thu, 7 May 2015 18:17:35 -0300
Subject: [PATCH] Better message if qt help file is not found - fixes #2084

---
 src/Gui/Assistant.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/Gui/Assistant.cpp b/src/Gui/Assistant.cpp
index 1c1b056fc..b650bf4e3 100644
--- a/src/Gui/Assistant.cpp
+++ b/src/Gui/Assistant.cpp
@@ -33,6 +33,7 @@
 
 #include "Assistant.h"
 #include <Base/Console.h>
+#include <Base/FileInfo.h>
 #include <App/Application.h>
 
 using namespace Gui;
@@ -96,13 +97,20 @@ bool Assistant::startAssistant()
         QString exe = QString::fromUtf8(App::GetApplication().getExecutableName());
         QString doc = QString::fromUtf8(App::Application::getHelpDir().c_str());
         QString qhc = doc + exe.toLower() + QLatin1String(".qhc");
+
+        Base::FileInfo fi ( (const char*)qhc.toUtf8() );
+        if (!fi.isReadable()) {
+            QMessageBox::critical(0, QObject::tr("%1 Help").arg(exe),
+            QObject::tr("FreeCAD help files not found (%1). You might need to install the FreeCAD documentation package.").arg(qhc));
+            return false;
+        }
 
         static bool first = true;
         if (first) {
             Base::Console().Log("Help file at %s\n", (const char*)qhc.toUtf8());
             first = false;
-        }
-
+        }
+        
         QStringList args;
 
         args << QLatin1String("-collectionFile") << qhc