diff --git a/src/engine/local_engine/localhand.cpp b/src/engine/local_engine/localhand.cpp
index f2d6110b..eb3ff3cb 100755
--- a/src/engine/local_engine/localhand.cpp
+++ b/src/engine/local_engine/localhand.cpp
@@ -25,7 +25,10 @@
 using namespace std;
 
 LocalHand::LocalHand(boost::shared_ptr<EngineFactory> f, GuiInterface *g, BoardInterface *b, PlayerInterface **p, int id, int sP, int aP, int dP, int sB,int sC)
-: HandInterface(), myFactory(f), myGui(g),  myBoard(b), playerArray(p), myPreflop(0), myFlop(0), myTurn(0), myRiver(0), myID(id), actualQuantityPlayers(aP), startQuantityPlayers(sP), dealerPosition(dP), actualRound(0), smallBlind(sB), startCash(sC), lastPlayersTurn(0), allInCondition(0), bettingRoundsPlayed(0)
+: myFactory(f), myGui(g),  myBoard(b), playerArray(p), myPreflop(0), myFlop(0), myTurn(0), myRiver(0),
+  myID(id), actualQuantityPlayers(aP), startQuantityPlayers(sP), dealerPosition(dP), actualRound(0),
+  smallBlind(sB), startCash(sC), activePlayersCounter(aP), lastPlayersTurn(0), allInCondition(0),
+  bettingRoundsPlayed(0)
 {
 
 	int i, j, k;
@@ -39,6 +42,8 @@ LocalHand::LocalHand(boost::shared_ptr<EngineFactory> f, GuiInterface *g, BoardI
 		if(playerArray[i]->getMyActiveStatus() != 0) {
 			playerArray[i]->setHand(this);
 		}
+	// myFlipCards auf 0 setzen
+		playerArray[i]->setMyCardsFlip(0, 0);
 	}
 
 
@@ -89,11 +94,6 @@ LocalHand::LocalHand(boost::shared_ptr<EngineFactory> f, GuiInterface *g, BoardI
 	}
 	delete[] cardsArray;
 
-	// myFlipCards auf 0 setzen
-	for(i=0; i<startQuantityPlayers; i++) {
-		playerArray[i]->setMyCardsFlip(0, 0);
-	}
-
 // // 	// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!   testing !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! //
 
 // // 	int *temp5Array;
@@ -353,7 +353,7 @@ void LocalHand::switchRounds() {
 	//unhighlight actual players groupbox
 	if(playerArray[lastPlayersTurn]->getMyActiveStatus() == 1) myGui->refreshGroupbox(lastPlayersTurn,1);
 
-	myGui->refreshGameLabels(actualRound);
+	myGui->refreshGameLabels();
 // 	/*/*/*/*cout <<*/*/*/*/ "NextPlayerSpeed1 stop" << endl;
 // 
 // 	cout << "NextPlayerSpeed2 start" << endl;
diff --git a/src/engine/network_engine/clienthand.cpp b/src/engine/network_engine/clienthand.cpp
index 912ffc6c..d56d97ee 100644
--- a/src/engine/network_engine/clienthand.cpp
+++ b/src/engine/network_engine/clienthand.cpp
@@ -22,7 +22,10 @@
 using namespace std;
 
 ClientHand::ClientHand(boost::shared_ptr<EngineFactory> f, GuiInterface *g, BoardInterface *b, PlayerInterface **p, int id, int sP, int aP, int dP, int sB,int sC)
-: myFactory(f), myGui(g),  myBoard(b), playerArray(p), myPreflop(0), myFlop(0), myTurn(0), myRiver(0), myID(id), actualQuantityPlayers(aP), startQuantityPlayers(sP), dealerPosition(dP), actualRound(0), smallBlind(sB), startCash(sC), allInCondition(0), bettingRoundsPlayed(0)
+: myFactory(f), myGui(g),  myBoard(b), playerArray(p), myPreflop(0), myFlop(0), myTurn(0), myRiver(0),
+  myID(id), actualQuantityPlayers(aP), startQuantityPlayers(sP), dealerPosition(dP), actualRound(0),
+  smallBlind(sB), startCash(sC), activePlayersCounter(aP), lastPlayersTurn(0), allInCondition(0),
+  bettingRoundsPlayed(0)
 {
 	int i;
 	lastPlayersTurn = 0;
@@ -34,6 +37,7 @@ ClientHand::ClientHand(boost::shared_ptr<EngineFactory> f, GuiInterface *g, Boar
 		if(playerArray[i]->getMyActiveStatus() != 0) {
 			playerArray[i]->setHand(this);
 		}
+	// myFlipCards auf 0 setzen
 		playerArray[i]->setMyCardsFlip(0, 0);
 	}
 
@@ -72,6 +76,11 @@ ClientHand::start()
 void
 ClientHand::switchRounds()
 {
+	// update active players counter.
+	activePlayersCounter = 0;
+	for (int i = 0; i < MAX_NUMBER_OF_PLAYERS; i++) { 
+		if (playerArray[i]->getMyAction() != 1 && playerArray[i]->getMyActiveStatus() == 1) activePlayersCounter++;
+	}
 }
 
 
diff --git a/src/gui/generic/serverguiwrapper.cpp b/src/gui/generic/serverguiwrapper.cpp
index 2d6a8ee9..6a3c8dfd 100644
--- a/src/gui/generic/serverguiwrapper.cpp
+++ b/src/gui/generic/serverguiwrapper.cpp
@@ -60,15 +60,13 @@ void ServerGuiWrapper::refreshPot() const {}
 void ServerGuiWrapper::refreshGroupbox(int playerID, int status) const {}
 void ServerGuiWrapper::refreshPlayerName() const {}
 void ServerGuiWrapper::refreshButton() const {}
+void ServerGuiWrapper::refreshGameLabels() const {}
 
 void ServerGuiWrapper::dealHoleCards() {}
 void ServerGuiWrapper::dealFlopCards() {}
 void ServerGuiWrapper::dealTurnCard() {}
 void ServerGuiWrapper::dealRiverCard() {}
 
-void ServerGuiWrapper::refreshGameLabels(int round) const {}
-
-
 void ServerGuiWrapper::nextPlayerAnimation() {}
 
 void ServerGuiWrapper::preflopAnimation1() {}
diff --git a/src/gui/generic/serverguiwrapper.h b/src/gui/generic/serverguiwrapper.h
index 55a15b53..81019522 100644
--- a/src/gui/generic/serverguiwrapper.h
+++ b/src/gui/generic/serverguiwrapper.h
@@ -44,7 +44,7 @@ public:
 	void refreshAll() const;
 	void refreshPlayerName() const;
 	void refreshButton() const;
-	void refreshGameLabels(int round) const;
+	void refreshGameLabels() const;
 
 	void dealHoleCards();
 	void dealFlopCards();
diff --git a/src/gui/guiinterface.h b/src/gui/guiinterface.h
index 318629ce..9340922a 100644
--- a/src/gui/guiinterface.h
+++ b/src/gui/guiinterface.h
@@ -49,6 +49,7 @@ public:
 	virtual void refreshAll() const=0;
 	virtual void refreshPlayerName() const=0;
 	virtual void refreshButton() const =0;
+	virtual void refreshGameLabels() const=0;
 
 // 	// Karten-Funktionen
 	virtual void dealHoleCards()=0;
@@ -56,8 +57,6 @@ public:
 	virtual void dealTurnCard()=0;
 	virtual void dealRiverCard()=0;
 
-	virtual void refreshGameLabels(int) const=0;
-
 	virtual void nextPlayerAnimation()=0;
 
 	virtual void preflopAnimation1()=0;
diff --git a/src/gui/qt/guiwrapper.cpp b/src/gui/qt/guiwrapper.cpp
index ced874d0..1268f093 100644
--- a/src/gui/qt/guiwrapper.cpp
+++ b/src/gui/qt/guiwrapper.cpp
@@ -44,7 +44,7 @@ GuiWrapper::~GuiWrapper()
 {
 }
 
-void GuiWrapper::initGui(int speed) { myW->initGui(speed); }
+void GuiWrapper::initGui(int speed) { myW->signalInitGui(speed); }
 
 Session &GuiWrapper::getSession() { return myW->getSession(); }
 void GuiWrapper::setSession(boost::shared_ptr<Session> session) { myW->setSession(session); }
@@ -58,7 +58,7 @@ void GuiWrapper::refreshPot() const { myW->signalRefreshPot(); }
 void GuiWrapper::refreshGroupbox(int playerID, int status) const { myW->signalRefreshGroupbox(playerID, status); }
 void GuiWrapper::refreshPlayerName() const { myW->signalRefreshPlayerName(); }
 void GuiWrapper::refreshButton() const { myW->signalRefreshButton(); }
-void GuiWrapper::refreshGameLabels(int round) const { myW->signalRefreshGameLabels(round); }
+void GuiWrapper::refreshGameLabels() const { myW->signalRefreshGameLabels(); }
 
 void GuiWrapper::dealHoleCards() { myW->signalDealHoleCards(); }
 void GuiWrapper::dealFlopCards() { myW->signalDealFlopCards0(); }
diff --git a/src/gui/qt/guiwrapper.h b/src/gui/qt/guiwrapper.h
index 03f6ba6b..997697de 100644
--- a/src/gui/qt/guiwrapper.h
+++ b/src/gui/qt/guiwrapper.h
@@ -52,14 +52,13 @@ public:
 	void refreshAll() const;
 	void refreshPlayerName() const;
 	void refreshButton() const;
+	void refreshGameLabels() const;
 
 	void dealHoleCards();
 	void dealFlopCards();
 	void dealTurnCard();
 	void dealRiverCard();
 
-	void refreshGameLabels(int round) const;
-
 	void nextPlayerAnimation();
 
 	void preflopAnimation1();
diff --git a/src/gui/qt/mainwindow/mainwindowimpl.cpp b/src/gui/qt/mainwindow/mainwindowimpl.cpp
index 24744924..9474f570 100755
--- a/src/gui/qt/mainwindow/mainwindowimpl.cpp
+++ b/src/gui/qt/mainwindow/mainwindowimpl.cpp
@@ -572,6 +572,8 @@ mainWindowImpl::mainWindowImpl(ConfigFile *c, QMainWindow *parent)
 	connect( lineEdit_ChatInput, SIGNAL( textChanged (QString) ), this, SLOT( checkChatInputLength(QString) ) );
 
 	//Nachrichten Thread-Save
+	connect(this, SIGNAL(signalInitGui(int)), this, SLOT(initGui(int)));
+
 	connect(this, SIGNAL(signalRefreshSet()), this, SLOT(refreshSet()));
 	connect(this, SIGNAL(signalRefreshCash()), this, SLOT(refreshCash()));
 	connect(this, SIGNAL(signalRefreshAction(int, int)), this, SLOT(refreshAction(int, int)));
@@ -581,6 +583,7 @@ mainWindowImpl::mainWindowImpl(ConfigFile *c, QMainWindow *parent)
 	connect(this, SIGNAL(signalRefreshAll()), this, SLOT(refreshAll()));
 	connect(this, SIGNAL(signalRefreshPlayerName()), this, SLOT(refreshPlayerName()));
 	connect(this, SIGNAL(signalRefreshButton()), this, SLOT(refreshButton()));
+	connect(this, SIGNAL(signalRefreshGameLabels()), this, SLOT(refreshGameLabels()));
 
 	connect(this, SIGNAL(signalMeInAction()), this, SLOT(meInAction()));
 
@@ -589,7 +592,6 @@ mainWindowImpl::mainWindowImpl(ConfigFile *c, QMainWindow *parent)
 	connect(this, SIGNAL(signalDealTurnCards0()), this, SLOT(dealTurnCards0()));
 	connect(this, SIGNAL(signalDealRiverCards0()), this, SLOT(dealRiverCards0()));
 
-	connect(this, SIGNAL(signalRefreshGameLabels(int)), this, SLOT(refreshGameLabels(int)));
 	connect(this, SIGNAL(signalNextPlayerAnimation()), this, SLOT(nextPlayerAnimation()));
 
 	connect(this, SIGNAL(signalPreflopAnimation1()), this, SLOT(preflopAnimation1()));
@@ -1181,9 +1183,9 @@ void mainWindowImpl::refreshGroupbox(int playerID, int status) {
 	}
 }
 
-void mainWindowImpl::refreshGameLabels(int round) { 
+void mainWindowImpl::refreshGameLabels() { 
 
-	switch(round) {
+	switch(mySession->getCurrentGame()->getCurrentHand()->getActualRound()) {
 		case 0: {
 			textLabel_handLabel->setText("Preflop");
 		} break;
@@ -2472,6 +2474,11 @@ void mainWindowImpl::networkError(int errorID, int osErrorID) {
 			{ myChangeHumanPlayerNameDialog->label_Message->setText(tr("The player name is either too short or too long. Please choose another one."));
 			  myChangeHumanPlayerNameDialog->exec(); }
 		break;
+		case ERR_NET_UNKNOWN_PLAYER_ID:
+			{ QMessageBox::warning(this, tr("Network Error"),
+				tr("The server referred to an unknown player. Aborting."),
+				QMessageBox::Close); }
+		break;
 		default:  { QMessageBox::warning(this, tr("Network Error"),
 				tr("An internal error occured."),
 				QMessageBox::Close); }
diff --git a/src/gui/qt/mainwindow/mainwindowimpl.h b/src/gui/qt/mainwindow/mainwindowimpl.h
index 5b4ac616..a83d1e2d 100755
--- a/src/gui/qt/mainwindow/mainwindowimpl.h
+++ b/src/gui/qt/mainwindow/mainwindowimpl.h
@@ -64,8 +64,6 @@ public:
 
 	~mainWindowImpl();
 
-	void initGui(int speed);
-
 	Session &getSession();
 	void setSession(boost::shared_ptr<Session> session);
 
@@ -75,6 +73,8 @@ public:
 	void setSpeeds();
 
 signals:
+	void signalInitGui(int speed);
+
 	void signalRefreshSet();
 	void signalRefreshCash();
 	void signalRefreshAction(int =-1, int=-1);
@@ -92,7 +92,7 @@ signals:
 	void signalDealTurnCards0();
 	void signalDealRiverCards0();
 
-	void signalRefreshGameLabels(int);
+	void signalRefreshGameLabels();
 	void signalNextPlayerAnimation();
 
 	void signalPreflopAnimation1();
@@ -122,6 +122,8 @@ signals:
 
 public slots:
 
+	void initGui(int speed);
+
 	//refresh-Funktionen
 	void refreshSet();
 	void refreshCash();
@@ -131,7 +133,7 @@ public slots:
 	void refreshGroupbox(int =-1, int =-1);
 	void refreshAll();
 	void refreshPlayerName();
-	void refreshGameLabels(int);
+	void refreshGameLabels();
 	void refreshButton();
 	void refreshPlayerAvatar();
 
diff --git a/src/net/clientstate.h b/src/net/clientstate.h
index 3e16ea64..ae25935c 100644
--- a/src/net/clientstate.h
+++ b/src/net/clientstate.h
@@ -257,7 +257,7 @@ protected:
 	static void SetPlayersTurn(Game &curGame, int playersTurn);
 };
 
-// State: Final (TODO).
+// State: Final (just for testing, should not be used).
 class ClientStateFinal : public ClientState
 {
 public:
diff --git a/src/net/common/clientstate.cpp b/src/net/common/clientstate.cpp
index c8cf1f3c..1be41e19 100644
--- a/src/net/common/clientstate.cpp
+++ b/src/net/common/clientstate.cpp
@@ -538,6 +538,7 @@ ClientStateWaitHand::InternalProcess(ClientThread &client, boost::shared_ptr<Net
 		client.GetGame()->initHand();
 		client.GetGame()->startHand();
 		client.GetGui().dealHoleCards();
+		client.GetGui().refreshGameLabels();
 		client.SetState(ClientStateRunHand::Instance());
 
 		retVal = MSG_NET_GAME_CLIENT_HAND_START;
@@ -577,7 +578,8 @@ ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetP
 			NetPacketPlayersActionDone::Data actionDoneData;
 			packet->ToNetPacketPlayersActionDone()->GetData(actionDoneData);
 			PlayerInterface *tmpPlayer = curGame->getPlayerByUniqueId(actionDoneData.playerId);
-			assert(tmpPlayer); // TODO: throw exception
+			if (!tmpPlayer)
+				throw ClientException(ERR_NET_UNKNOWN_PLAYER_ID, 0);
 
 			if (actionDoneData.gameState == GAME_STATE_PREFLOP_SMALL_BLIND)
 				tmpPlayer->setMyButton(BUTTON_SMALL_BLIND);
@@ -609,7 +611,8 @@ ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetP
 			NetPacketPlayersTurn::Data turnData;
 			packet->ToNetPacketPlayersTurn()->GetData(turnData);
 			PlayerInterface *tmpPlayer = curGame->getPlayerByUniqueId(turnData.playerId);
-			assert(tmpPlayer); // TODO: throw exception
+			if (!tmpPlayer)
+				throw ClientException(ERR_NET_UNKNOWN_PLAYER_ID, 0);
 
 			// Set round.
 			if (curGame->getCurrentHand()->getActualRound() != turnData.gameState)
@@ -623,12 +626,13 @@ ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetP
 					curGame->getPlayerArray()[i]->setMySetNull();
 				}
 
+				curGame->getCurrentHand()->setActualRound(turnData.gameState);
+
 				client.GetGui().refreshPot();
 				client.GetGui().refreshSet();
 				client.GetGui().refreshAction();
 				client.GetGui().refreshCash();
-
-				curGame->getCurrentHand()->setActualRound(turnData.gameState);
+				client.GetGui().refreshGameLabels();
 			}
 
 			// Next player's turn.
@@ -683,7 +687,8 @@ ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetP
 			packet->ToNetPacketEndOfHandHideCards()->GetData(endHandData);
 
 			PlayerInterface *tmpPlayer = curGame->getPlayerByUniqueId(endHandData.playerId);
-			assert(tmpPlayer); // TODO: throw exception
+			if (!tmpPlayer)
+				throw ClientException(ERR_NET_UNKNOWN_PLAYER_ID, 0);
 
 			tmpPlayer->setMyCash(endHandData.playerMoney);
 			// TODO use moneyWon
@@ -711,7 +716,8 @@ ClientStateRunHand::InternalProcess(ClientThread &client, boost::shared_ptr<NetP
 			while (i != end)
 			{
 				PlayerInterface *tmpPlayer = curGame->getPlayerByUniqueId((*i).playerId);
-				assert(tmpPlayer); // TODO: throw exception
+				if (!tmpPlayer)
+					throw ClientException(ERR_NET_UNKNOWN_PLAYER_ID, 0);
 
 				int tmpCards[2];
 				tmpCards[0] = static_cast<int>((*i).cards[0]);
diff --git a/src/net/common/clientthread.cpp b/src/net/common/clientthread.cpp
index 332a62de..1888ed75 100644
--- a/src/net/common/clientthread.cpp
+++ b/src/net/common/clientthread.cpp
@@ -53,7 +53,7 @@ private:
 
 
 ClientThread::ClientThread(GuiInterface &gui)
-: m_curState(NULL), m_gui(gui), m_curGameId(0), m_guiPlayerNum(0)
+: m_curState(NULL), m_gui(gui), m_curGameId(1), m_guiPlayerNum(0)
 {
 	m_context.reset(new ClientContext);
 	m_senderCallback.reset(new ClientSenderCallback(*this));
@@ -70,7 +70,10 @@ ClientThread::Init(
 	const string &serverAddress, unsigned serverPort, bool ipv6, const string &pwd, const string &playerName)
 {
 	if (IsRunning())
-		return; // TODO: throw exception
+	{
+		assert(false);
+		return;
+	}
 
 	ClientContext &context = GetContext();
 
diff --git a/src/net/socket_msg.h b/src/net/socket_msg.h
index bce75293..1def77b9 100644
--- a/src/net/socket_msg.h
+++ b/src/net/socket_msg.h
@@ -50,6 +50,7 @@
 #define ERR_NET_INVALID_PLAYER_NAME		107
 #define ERR_NET_INVALID_PLAYER_RESULTS	108
 #define ERR_NET_INVALID_CHAT_TEXT		109
+#define ERR_NET_UNKNOWN_PLAYER_ID		110
 
 // This is an internal message which is not reported.
 #define MSG_SOCK_INTERNAL_PENDING		0