The connect button is disabled until you get an FL package from a server.

lobby.cpp

@@ -48,6 +48,8 @@ Lobby::Lobby(AOApplication *p_ao_app) : QMainWindow()
   connect(ui_chatmessage, SIGNAL(returnPressed()), this, SLOT(on_chatfield_return_pressed()));
   connect(ui_cancel, SIGNAL(clicked()), ao_app, SLOT(loading_cancelled()));
 
+  ui_connect->setEnabled(false);
+
   set_widgets();
 }
 
@@ -311,6 +313,8 @@ void Lobby::on_server_list_clicked(QModelIndex p_model)
 
   ui_player_count->setText("Offline");
 
+  ui_connect->setEnabled(false);
+
   ao_app->net_manager->connect_to_server(f_server);
 }
 
@@ -371,6 +375,11 @@ void Lobby::set_player_count(int players_online, int max_players)
   ui_player_count->setText(f_string);
 }
 
+void Lobby::enable_connect_button()
+{
+  ui_connect->setEnabled(true);
+}
+
 Lobby::~Lobby()
 {
 

lobby.h

@@ -37,6 +37,7 @@ public:
   void hide_loading_overlay(){ui_loading_background->hide();}
   QString get_chatlog();
   int get_selected_server();
+  void enable_connect_button();
 
   void set_loading_value(int p_value);
 

packet_distribution.cpp

@@ -206,6 +206,8 @@ void AOApplication::server_packet_received(AOPacket *p_packet)
       arup_enabled = true;
     if (f_packet.contains("modcall_reason",Qt::CaseInsensitive))
       modcall_reason_enabled = true;
+
+    w_lobby->enable_connect_button();
   }
   else if (header == "PN")
   {