Merge with develop

--HG--
branch : compatibility-develop

code/ryzom/tools/client/ryzom_installer/src/downloader.cpp

@@ -323,6 +323,13 @@ void CDownloader::onHeadFinished()
 		}
 	}
 
+	// error when download is not yet ready
+	else if (status == 307)
+	{
+		if (m_listener) m_listener->operationFail(tr("File is not available, please retry later (status code: %1)").arg(status));
+		return;
+	}
+
 	// other status
 	else
 	{

code/ryzom/tools/client/ryzom_installer/src/filescleaner.cpp

@@ -51,11 +51,13 @@ bool CFilesCleaner::exec()
 	QStringList filter;
 	filter << "*.string_cache";
 
+	// certificate should be in gamedev.bnp now
+	filter << "*.pem";
+
 	if (dir.exists("packedsheets.bnp"))
 	{
 		filter << "*.packed_sheets";
 		filter << "*.packed";
-		filter << "*.pem";
 	}
 
 	// temporary files

code/ryzom/tools/client/ryzom_installer/src/operationdialog.cpp

@@ -492,6 +492,13 @@ void COperationDialog::onProgressSuccess(qint64 total)
 void COperationDialog::onProgressFail(const QString &error)
 {
 	QMessageBox::critical(this, tr("Error"), error);
+
+	{
+		QMutexLocker locker(&m_abortingMutex);
+		m_aborting = true;
+	}
+
+	processNextStep();
 }
 
 void COperationDialog::onDone()