diff --git a/src/content_sao.cpp b/src/content_sao.cpp
index efc14570a..8916b4926 100644
--- a/src/content_sao.cpp
+++ b/src/content_sao.cpp
@@ -245,7 +245,7 @@ public:
 		}
 	}
 
-	std::string getClientInitializationData()
+	std::string getClientInitializationData(u16 protocol_version)
 	{
 		std::ostringstream os(std::ios::binary);
 		// version
@@ -564,25 +564,41 @@ void LuaEntitySAO::step(float dtime, bool send_recommended)
 	}
 }
 
-std::string LuaEntitySAO::getClientInitializationData()
+std::string LuaEntitySAO::getClientInitializationData(u16 protocol_version)
 {
 	std::ostringstream os(std::ios::binary);
-	writeU8(os, 1); // version
-	os<<serializeString(""); // name
-	writeU8(os, 0); // is_player
-	writeS16(os, getId()); //id
-	writeV3F1000(os, m_base_position);
-	writeF1000(os, m_yaw);
-	writeS16(os, m_hp);
 
-	writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
-	os<<serializeLongString(getPropertyPacket()); // message 1
-	os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
-	os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
-	for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
-		os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+	if(protocol_version >= 14)
+	{
+		writeU8(os, 1); // version
+		os<<serializeString(""); // name
+		writeU8(os, 0); // is_player
+		writeS16(os, getId()); //id
+		writeV3F1000(os, m_base_position);
+		writeF1000(os, m_yaw);
+		writeS16(os, m_hp);
+
+		writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+		os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+		}
+		os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
+	}
+	else
+	{
+		writeU8(os, 0); // version
+		os<<serializeString(""); // name
+		writeU8(os, 0); // is_player
+		writeV3F1000(os, m_base_position);
+		writeF1000(os, m_yaw);
+		writeS16(os, m_hp);
+		writeU8(os, 2); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
 	}
-	os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
 
 	// return result
 	return os.str();
@@ -962,25 +978,41 @@ bool PlayerSAO::unlimitedTransferDistance() const
 	return g_settings->getBool("unlimited_player_transfer_distance");
 }
 
-std::string PlayerSAO::getClientInitializationData()
+std::string PlayerSAO::getClientInitializationData(u16 protocol_version)
 {
 	std::ostringstream os(std::ios::binary);
-	writeU8(os, 1); // version
-	os<<serializeString(m_player->getName()); // name
-	writeU8(os, 1); // is_player
-	writeS16(os, getId()); //id
-	writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
-	writeF1000(os, m_player->getYaw());
-	writeS16(os, getHP());
 
-	writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
-	os<<serializeLongString(getPropertyPacket()); // message 1
-	os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
-	os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
-	for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
-		os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+	if(protocol_version >= 15)
+	{
+		writeU8(os, 1); // version
+		os<<serializeString(m_player->getName()); // name
+		writeU8(os, 1); // is_player
+		writeS16(os, getId()); //id
+		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
+		writeF1000(os, m_player->getYaw());
+		writeS16(os, getHP());
+
+		writeU8(os, 4 + m_bone_position.size()); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
+		os<<serializeLongString(gob_cmd_update_animation(m_animation_range, m_animation_speed, m_animation_blend)); // 3
+		for(std::map<std::string, core::vector2d<v3f> >::const_iterator ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii){
+			os<<serializeLongString(gob_cmd_update_bone_position((*ii).first, (*ii).second.X, (*ii).second.Y)); // m_bone_position.size
+		}
+		os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
+	}
+	else
+	{
+		writeU8(os, 0); // version
+		os<<serializeString(m_player->getName()); // name
+		writeU8(os, 1); // is_player
+		writeV3F1000(os, m_player->getPosition() + v3f(0,BS*1,0));
+		writeF1000(os, m_player->getYaw());
+		writeS16(os, getHP());
+		writeU8(os, 2); // number of messages stuffed in here
+		os<<serializeLongString(getPropertyPacket()); // message 1
+		os<<serializeLongString(gob_cmd_update_armor_groups(m_armor_groups)); // 2
 	}
-	os<<serializeLongString(gob_cmd_update_attachment(m_attachment_parent_id, m_attachment_bone, m_attachment_position, m_attachment_rotation)); // 4
 
 	// return result
 	return os.str();
diff --git a/src/content_sao.h b/src/content_sao.h
index 392c3f923..065c6a039 100644
--- a/src/content_sao.h
+++ b/src/content_sao.h
@@ -48,7 +48,7 @@ public:
 			const std::string &data);
 	bool isAttached();
 	void step(float dtime, bool send_recommended);
-	std::string getClientInitializationData();
+	std::string getClientInitializationData(u16 protocol_version);
 	std::string getStaticData();
 	int punch(v3f dir,
 			const ToolCapabilities *toolcap=NULL,
@@ -140,7 +140,7 @@ public:
 	void removingFromEnvironment();
 	bool isStaticAllowed() const;
 	bool unlimitedTransferDistance() const;
-	std::string getClientInitializationData();
+	std::string getClientInitializationData(u16 protocol_version);
 	std::string getStaticData();
 	bool isAttached();
 	void step(float dtime, bool send_recommended);
diff --git a/src/server.cpp b/src/server.cpp
index 684e3bb08..961bdeaf9 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -1568,7 +1568,7 @@ void Server::AsyncRunStep()
 				
 				if(obj)
 					data_buffer.append(serializeLongString(
-							obj->getClientInitializationData()));
+							obj->getClientInitializationData(client->net_proto_version)));
 				else
 					data_buffer.append(serializeLongString(""));
 
@@ -2407,7 +2407,7 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 
 	if(command == TOSERVER_PLAYERPOS)
 	{
-		if(datasize < 2+12+12+4+4+4)
+		if(datasize < 2+12+12+4+4)
 			return;
 	
 		u32 start = 0;
@@ -2415,7 +2415,9 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		v3s32 ss = readV3S32(&data[start+2+12]);
 		f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
 		f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
-		u32 keyPressed = (u32)readU32(&data[2+12+12+4+4]);
+		u32 keyPressed = 0;
+		if(datasize >= 2+12+12+4+4+4)
+			keyPressed = (u32)readU32(&data[2+12+12+4+4]);
 		v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
 		v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
 		pitch = wrapDegrees(pitch);
diff --git a/src/serverobject.h b/src/serverobject.h
index 1bbd3e4e8..14752878f 100644
--- a/src/serverobject.h
+++ b/src/serverobject.h
@@ -118,7 +118,7 @@ public:
 		The return value of this is passed to the client-side object
 		when it is created
 	*/
-	virtual std::string getClientInitializationData(){return "";}
+	virtual std::string getClientInitializationData(u16 protocol_version){return "";}
 	
 	/*
 		The return value of this is passed to the server-side object