diff --git a/spwplugin/spwplugin.cpp b/spwplugin/spwplugin.cpp
--- a/spwplugin/spwplugin.cpp
+++ b/spwplugin/spwplugin.cpp
@@ -32,7 +32,7 @@ spwplugin::spwplugin(QWidget *parent):so
     this->pyObject = new spwPyWrapper(this);
     this->mainGroupBox = new QGroupBox("SpaceWire Plugin Configuration",this);
     this->bridgeSelector = new QComboBox(this);
-    this->mainLayout = new QGridLayout(this);
+    this->mainLayout = new QGridLayout(this->mainGroupBox);
     this->mainLayout->addWidget(new QLabel("Select SpaceWire bridge",this),0,0,1,1,Qt::AlignCenter);
     this->mainLayout->addWidget(this->bridgeSelector,0,1,1,1);
     this->mainGroupBox->setLayout(this->mainLayout);
diff --git a/spwplugin/stardundeespw_usb.cpp b/spwplugin/stardundeespw_usb.cpp
--- a/spwplugin/stardundeespw_usb.cpp
+++ b/spwplugin/stardundeespw_usb.cpp
@@ -82,6 +82,7 @@ int stardundeeSPW_USB::pushRMAPPacket(ch
 unsigned int stardundeeSPW_USB::Write(unsigned int *Value, unsigned int count, unsigned int address)
 {
     char writeBuffer[RMAP_WRITE_PACKET_MIN_SZ((RMAP_MAX_XFER_SIZE*4))+1];
+    char *RMAPAckBuff;
     writeBuffer[0]=this->manager->linkNumber;//Link number
     int transactionID = 0;
     int written=0;
@@ -103,8 +104,12 @@ unsigned int stardundeeSPW_USB::Write(un
             writeBuffer[RMAP_WRITE_HEADER_MIN_SZ+(i*4)+3] = (char)(((unsigned int)Value[i+written]>>8)&0xFF);
             writeBuffer[RMAP_WRITE_HEADER_MIN_SZ+(i*4)+4] = (char)(((unsigned int)Value[i+written])&0xFF);
         }
+        transactionID=manager->getRMAPtransactionID();
+        SocExplorerEngine::message(this->plugin,QString("Sending Write request with ID=%1").arg(transactionID),2);
         RMAP_build_tx_request_header(this->manager->rmapAddress,this->manager->rmapKey,1,transactionID,address+(written*4),RMAP_MAX_XFER_SIZE*4,writeBuffer+1);
         manager->sendPacket(writeBuffer,RMAP_WRITE_PACKET_MIN_SZ(RMAP_MAX_XFER_SIZE*4)+1);
+        manager->getRMAPanswer(transactionID,&RMAPAckBuff);
+        free(RMAPAckBuff);
         written+=RMAP_MAX_XFER_SIZE;
         count-=RMAP_MAX_XFER_SIZE;
         progress->setValue(written);
@@ -119,8 +124,12 @@ unsigned int stardundeeSPW_USB::Write(un
             writeBuffer[RMAP_WRITE_HEADER_MIN_SZ+(i*4)+3] = (char)(((unsigned int)Value[i+written]>>8)&0xFF);
             writeBuffer[RMAP_WRITE_HEADER_MIN_SZ+(i*4)+4] = (char)(((unsigned int)Value[i+written])&0xFF);
         }
+        transactionID=manager->getRMAPtransactionID();
+        SocExplorerEngine::message(this->plugin,QString("Sending Write request with ID=%1").arg(transactionID),2);
         RMAP_build_tx_request_header(this->manager->rmapAddress,this->manager->rmapKey,1,transactionID,address+(written*4),count*4,writeBuffer+1);
         manager->sendPacket(writeBuffer,RMAP_WRITE_PACKET_MIN_SZ(count*4) +1);
+        manager->getRMAPanswer(transactionID,&RMAPAckBuff);
+        free(RMAPAckBuff);
         written+=count;
         if(progress!=NULL)
         {
@@ -260,7 +269,7 @@ void stardundeeSPW_USB::rmapTimeoutChang
 void stardundeeSPW_USB::makeGUI(socexplorerplugin *parent)
 {
     this->p_GUI = new StarDundeeGUI();
-//    this->mainLayout = new QGridLayout(this->p_GUI);
+    //    this->mainLayout = new QGridLayout(this->p_GUI);
     connect(((StarDundeeGUI*)this->p_GUI),SIGNAL(connectClicked()),this,SLOT(toggleBridgeConnection()));
     connect(this->manager,SIGNAL(updateAvailableBrickCount(int)),((StarDundeeGUI*)this->p_GUI),SLOT(updateAvailableBrickCount(int)));
     connect(((StarDundeeGUI*)this->p_GUI),SIGNAL(brickSelectionChanged(int)),this,SLOT(brickSelectionChanged(int)));
@@ -338,29 +347,26 @@ void stardundeeSPW_USB_Manager::run()
                             SocExplorerEngine::message(this->plugin,"Got end of packet",2);
                             if(buffer[1]==(char)SPW_PROTO_ID_RMAP) //RMAP packet
                             {
+                                RMAP_Answer* packet;
                                 SocExplorerEngine::message(this->plugin,"Got RMAP packet",2);
                                 SocExplorerEngine::message(this->plugin,QString("Rmap packet size %1").arg(properties.len),2);
-                                if(properties.len>8)
+                                char* packetbuffer = (char*)malloc(properties.len);
+                                memcpy(packetbuffer,buffer,properties.len);
+                                USBSpaceWire_FreeRead(hDevice, pIdentifier);
+                                pIdentifier = NULL;
+                                handleMutex->unlock();
+                                if(properties.len==8)
                                 {
-                                    char* packetbuffer = (char*)malloc(properties.len);
-                                    memcpy(packetbuffer,buffer,properties.len);
-                                    USBSpaceWire_FreeRead(hDevice, pIdentifier);
-                                    pIdentifier = NULL;
-                                    handleMutex->unlock();
-                                    RMAP_Answer* packet=new RMAP_Answer(RMAP_get_transactionID(buffer+1),packetbuffer,properties.len);
-                                    RMAP_AnswersMtx->lock();
-                                    RMAP_Answers.append(packet);
-                                    RMAP_AnswersMtx->unlock();
-                                    RMAP_AnswersSem->release();
-
+                                    packet=new RMAP_Answer(RMAP_get_transactionID(buffer),packetbuffer,properties.len);
                                 }
-                                else //it's a RMAP write response
+                                else
                                 {
-                                    USBSpaceWire_FreeRead(hDevice, pIdentifier);
-                                    pIdentifier = NULL;
-                                    handleMutex->unlock();
+                                    packet=new RMAP_Answer(RMAP_get_transactionID(buffer+1),packetbuffer,properties.len);
                                 }
-
+                                RMAP_AnswersMtx->lock();
+                                RMAP_Answers.append(packet);
+                                RMAP_AnswersMtx->unlock();
+                                RMAP_AnswersSem->release();
                             }
                             else //any non-rmap packet will be pushed to the network
                             {
@@ -538,9 +544,10 @@ int stardundeeSPW_USB_Manager::getRMAPan
     {
         this->RMAP_AnswersMtx->lock();
         SocExplorerEngine::message(this->plugin,"Got exclusive access on RMAP_Answers stack",2);
-        SocExplorerEngine::message(this->plugin,QString("%2 packet(s) available in RMAP_Answers stack").arg(RMAP_Answers.count()),2);
+        SocExplorerEngine::message(this->plugin,QString("%1 packet(s) available in RMAP_Answers stack").arg(RMAP_Answers.count()),2);
         for(int i=0;i<RMAP_Answers.count();i++)
         {
+            SocExplorerEngine::message(this->plugin,QString("Packet %1 ID=%2").arg(i).arg(RMAP_Answers[i]->transactionID),2);
             if(RMAP_Answers[i]->transactionID==transactionID)
             {
                 this->RMAP_pending_transaction_IDsMtx->lock();