diff --git a/code/ryzom/client/src/login_patch.cpp b/code/ryzom/client/src/login_patch.cpp
index 0afbdf5f4..0f867ff70 100644
--- a/code/ryzom/client/src/login_patch.cpp
+++ b/code/ryzom/client/src/login_patch.cpp
@@ -952,7 +952,7 @@ void CPatchManager::createBatchFile(CProductDescriptionForClient &descFile, bool
 			// use exec command under OS X
 			contentSuffix += toString("exec \"$RYZOM_CLIENT\" %s $LOGIN $PASSWORD $SHARDID\n", additionalParams.c_str());
 #else
-			contentSuffix += toString("\"$RYZOM_CLIENT\" %s $LOGIN $PASSWORD $SHARDID\n", additionalParams.c_str());
+			contentSuffix += toString("\"$RYZOM_CLIENT\" %s $LOGIN $PASSWORD $SHARDID &\n", additionalParams.c_str());
 #endif
 		}
 #endif
diff --git a/code/ryzom/client/src/network_connection.cpp b/code/ryzom/client/src/network_connection.cpp
index 5a7e42179..d78fd6199 100644
--- a/code/ryzom/client/src/network_connection.cpp
+++ b/code/ryzom/client/src/network_connection.cpp
@@ -2756,7 +2756,16 @@ void	CNetworkConnection::sendSystemDisconnection()
 	uint32	length = message.length();
 
 	if (_Connection.connected())
-		_Connection.send (message.buffer(), length);
+	{
+		try
+		{
+			_Connection.send(message.buffer(), length);
+		}
+		catch (const ESocket &e)
+		{
+			nlwarning("Socket exception: %s", e.what());
+		}
+	}
 	//sendUDP (&(_Connection), message.buffer(), length);
 	statsSend(length);
 
diff --git a/code/ryzom/tools/client/client_config_qt/src/client_config_dialog.cpp b/code/ryzom/tools/client/client_config_qt/src/client_config_dialog.cpp
index 56568d4a2..31fcfd1ac 100644
--- a/code/ryzom/tools/client/client_config_qt/src/client_config_dialog.cpp
+++ b/code/ryzom/tools/client/client_config_qt/src/client_config_dialog.cpp
@@ -177,6 +177,11 @@ void CClientConfigDialog::onClickPlay()
 	clientFullPath += "ryzom_client";
 #endif
 
+#ifndef Q_OS_WIN32
+	// fix executable permissions under UNIX
+	QFile::setPermissions(clientFullPath, QFile::permissions(clientFullPath) | QFile::ExeGroup | QFile::ExeUser | QFile::ExeOther);
+#endif
+
 	started = QProcess::startDetached(clientFullPath, arguments);
 
 	onClickOK();
diff --git a/code/ryzom/tools/client/ryzom_installer/src/main.cpp b/code/ryzom/tools/client/ryzom_installer/src/main.cpp
index 6b664ace0..3420ef42e 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/main.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/main.cpp
@@ -271,6 +271,11 @@ int main(int argc, char *argv[])
 	if (restartInstaller)
 	{
 #ifndef _DEBUG
+#ifndef Q_OS_WIN32
+		// fix executable permissions under UNIX
+		QFile::setPermissions(config.getInstallerInstalledFilePath(), QFile::permissions(config.getInstallerInstalledFilePath()) | QFile::ExeGroup | QFile::ExeUser | QFile::ExeOther);
+#endif
+
 		if (QProcess::startDetached(config.getInstallerInstalledFilePath())) return 0;
 #endif
 	}
diff --git a/code/ryzom/tools/client/ryzom_installer/src/mainwindow.cpp b/code/ryzom/tools/client/ryzom_installer/src/mainwindow.cpp
index 822570fec..5d61f0924 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/mainwindow.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/mainwindow.cpp
@@ -137,11 +137,19 @@ void CMainWindow::onPlayClicked()
 	arguments << profile.id;
 	arguments << profile.arguments.split(' ');
 
+#ifndef Q_OS_WIN32
+	QFile::setPermissions(executable, QFile::permissions(executable) | QFile::ExeGroup | QFile::ExeUser | QFile::ExeOther);
+#endif
+
 	// launch the game with all arguments and from server root directory (to use right data)
 	bool started = QProcess::startDetached(executable, arguments, server.getDirectory());
 
 	// define this profile as default one
-	CConfigFile::getInstance()->setDefaultProfileIndex(profileIndex);
+	if (started)
+	{
+		CConfigFile::getInstance()->setDefaultProfileIndex(profileIndex);
+		CConfigFile::getInstance()->save();
+	}
 }
 
 void CMainWindow::onConfigureClicked()
@@ -164,9 +172,17 @@ void CMainWindow::onConfigureClicked()
 	arguments << "-p";
 	arguments << profile.id;
 
+#ifndef Q_OS_WIN32
+	QFile::setPermissions(executable, QFile::permissions(executable) | QFile::ExeGroup | QFile::ExeUser | QFile::ExeOther);
+#endif
+
 	bool started = QProcess::startDetached(executable, arguments);
 
-	CConfigFile::getInstance()->setDefaultProfileIndex(profileIndex);
+	if (started)
+	{
+		CConfigFile::getInstance()->setDefaultProfileIndex(profileIndex);
+		CConfigFile::getInstance()->save();
+	}
 }
 
 void CMainWindow::onProfiles()
diff --git a/code/ryzom/tools/client/ryzom_installer/src/utils.cpp b/code/ryzom/tools/client/ryzom_installer/src/utils.cpp
index 9a08b4ac8..0a31629f9 100644
--- a/code/ryzom/tools/client/ryzom_installer/src/utils.cpp
+++ b/code/ryzom/tools/client/ryzom_installer/src/utils.cpp
@@ -408,6 +408,14 @@ QString appendShortcutExtension(const QString &shortcut)
 
 QString getVersionFromExecutable(const QString &path)
 {
+	// check if file exists
+	if (!QFile::exists(path)) return "";
+
+#ifndef Q_OS_WIN32
+	// fix executable permissions under UNIX
+	QFile::setPermissions(path, QFile::permissions(path) | QFile::ExeGroup | QFile::ExeUser | QFile::ExeOther);
+#endif
+
 	// launch executable with --version argument
 	QProcess process;
 	process.setProcessChannelMode(QProcess::MergedChannels);