diff --git a/common/JackNetAdapter.cpp b/common/JackNetAdapter.cpp
index 0afcfe54..1b8e6829 100644
--- a/common/JackNetAdapter.cpp
+++ b/common/JackNetAdapter.cpp
@@ -28,9 +28,6 @@ namespace Jack
     {
         jack_log ( "JackNetAdapter::JackNetAdapter" );
 
-        if ( SocketAPIInit() < 0 )
-            jack_error ( "Can't init Socket API, exiting..." );
-
         //global parametering
         //we can't call JackNetSlaveInterface constructor with some parameters before
         //because we don't have full parametering right now
@@ -165,6 +162,7 @@ namespace Jack
                 }
                 break;
                 // Stop when the thread cycle is finished
+                
             case JackThread::kRunning:
                 if ( fThread.Stop() < 0 )
                 {
@@ -172,6 +170,7 @@ namespace Jack
                     return -1;
                 }
                 break;
+                
             default:
                 break;
         }
@@ -268,11 +267,13 @@ namespace Jack
                     jack_transport_stop ( fJackClient );
                     jack_info ( "NetMaster : transport stops." );
                     break;
+                    
                 case JackTransportStarting :
                     jack_transport_reposition ( fJackClient, &fSendTransportData.fPosition );
                     jack_transport_start ( fJackClient );
                     jack_info ( "NetMaster : transport starts." );
                     break;
+                    
                 case JackTransportRolling :
                     //TODO , we need to :
                     // - find a way to call TransportEngine->SetNetworkSync()
@@ -405,6 +406,7 @@ namespace Jack
             if ( fCaptureRingBuffer[port_index]->WriteResample ( fSoftCaptureBuffer[port_index], fAdaptedBufferSize ) < fAdaptedBufferSize )
                 failure = true;
         }
+        
         //and output data,
         for ( port_index = 0; port_index < fPlaybackChannels; port_index++ )
         {
@@ -529,15 +531,21 @@ extern "C"
         Jack::JackAudioAdapter* adapter;
         jack_nframes_t buffer_size = jack_get_buffer_size ( jack_client );
         jack_nframes_t sample_rate = jack_get_sample_rate ( jack_client );
+        
+        try {
+        
+            adapter = new Jack::JackAudioAdapter ( jack_client, new Jack::JackNetAdapter ( jack_client, buffer_size, sample_rate, params ) );
+            assert ( adapter );
 
-        adapter = new Jack::JackAudioAdapter ( jack_client, new Jack::JackNetAdapter ( jack_client, buffer_size, sample_rate, params ) );
-        assert ( adapter );
-
-        if ( adapter->Open() == 0 )
-            return 0;
-        else
-        {
-            delete adapter;
+            if ( adapter->Open() == 0 )
+                return 0;
+            else
+            {
+                delete adapter;
+                return 1;
+            }
+            
+        } catch (...) {
             return 1;
         }
     }
diff --git a/common/JackNetDriver.cpp b/common/JackNetDriver.cpp
index 9a3ec943..98bb912d 100644
--- a/common/JackNetDriver.cpp
+++ b/common/JackNetDriver.cpp
@@ -152,9 +152,11 @@ namespace Jack
             case 's' :
                 plot_name += string ( "_slow" );
                 break;
+                
             case 'n' :
                 plot_name += string ( "_normal" );
                 break;
+                
             case 'f' :
                 plot_name += string ( "_fast" );
                 break;
@@ -372,11 +374,13 @@ namespace Jack
                     fEngineControl->fTransport.SetCommand ( TransportCommandStop );
                     jack_info ( "Master stops transport." );
                     break;
+                    
                 case JackTransportStarting :
                     fEngineControl->fTransport.RequestNewPos ( &fSendTransportData.fPosition );
                     fEngineControl->fTransport.SetCommand ( TransportCommandStart );
                     jack_info ( "Master starts transport." );
                     break;
+                    
                 case JackTransportRolling :
                     fEngineControl->fTransport.SetState ( JackTransportRolling );
                     jack_info ( "Master is rolling." );
@@ -638,11 +642,6 @@ namespace Jack
 
         EXPORT Jack::JackDriverClientInterface* driver_initialize ( Jack::JackLockedEngine* engine, Jack::JackSynchro* table, const JSList* params )
         {
-            if ( SocketAPIInit() < 0 )
-            {
-                jack_error ( "Can't init Socket API, exiting..." );
-                return NULL;
-            }
             char multicast_ip[16];
             strcpy ( multicast_ip, DEFAULT_MULTICAST_IP );
             char name[JACK_CLIENT_NAME_SIZE];
@@ -706,15 +705,23 @@ namespace Jack
                 }
             }
 
-            Jack::JackDriverClientInterface* driver = new Jack::JackWaitThreadedDriver (
-                new Jack::JackNetDriver ( "system", "net_pcm", engine, table, multicast_ip, udp_port, mtu,
-                                          midi_input_ports, midi_output_ports, name, transport_sync, network_mode ) );
-            if ( driver->Open ( period_size, sample_rate, 1, 1, audio_capture_ports, audio_playback_ports,
-                                monitor, "from_master_", "to_master_", 0, 0 ) == 0 )
-                return driver;
-
-            delete driver;
-            return NULL;
+            try {
+            
+                Jack::JackDriverClientInterface* driver = 
+                    new Jack::JackWaitThreadedDriver(
+                        new Jack::JackNetDriver("system", "net_pcm", engine, table, multicast_ip, udp_port, mtu,
+                                          midi_input_ports, midi_output_ports, name, transport_sync, network_mode));
+                    if (driver->Open (period_size, sample_rate, 1, 1, audio_capture_ports, audio_playback_ports,
+                                monitor, "from_master_", "to_master_", 0, 0) == 0) {
+                    return driver;
+                } else {
+                    delete driver;
+                    return NULL;
+                }
+                
+            } catch (...) {
+                return NULL;
+            }   
         }
 
 #ifdef __cplusplus
diff --git a/common/JackNetInterface.cpp b/common/JackNetInterface.cpp
index 47367e2d..286fc08b 100644
--- a/common/JackNetInterface.cpp
+++ b/common/JackNetInterface.cpp
@@ -719,7 +719,7 @@ namespace Jack
                         fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
                         fNetAudioCaptureBuffer->RenderToJackPorts ( rx_head->fSubCycle );
                         break;
-                        
+         
                     case 's':   //sync
                         jack_info ( "NetSlave : overloaded, skipping receive." );
                         return 0;
diff --git a/common/JackNetInterface.h b/common/JackNetInterface.h
index 20f5a326..80e90c83 100644
--- a/common/JackNetInterface.h
+++ b/common/JackNetInterface.h
@@ -147,11 +147,23 @@ namespace Jack
         public:
             JackNetSlaveInterface() : JackNetInterface()
             {
-                fSlaveCounter++;
+                //open Socket API with the first slave
+                if (fSlaveCounter++ == 0) {
+                    if (SocketAPIInit() < 0) {
+                        jack_error ( "Can't init Socket API, exiting..." );
+                        throw -1;
+                    }
+                }
             }
             JackNetSlaveInterface ( const char* ip, int port ) : JackNetInterface ( ip, port )
             {
-                fSlaveCounter++;
+                //open Socket API with the first slave
+                if (fSlaveCounter++ == 0) {
+                    if (SocketAPIInit() < 0) {
+                        jack_error ( "Can't init Socket API, exiting..." );
+                        throw -1;
+                    }
+                }
             }
             ~JackNetSlaveInterface()
             {
@@ -164,7 +176,9 @@ namespace Jack
 
 #define DEFAULT_MULTICAST_IP "225.3.19.154"
 #define DEFAULT_PORT 19000
+
 #define SLAVE_SETUP_RETRY 5
+
 #define MASTER_INIT_TIMEOUT 1000000     // in usec
 #define SLAVE_INIT_TIMEOUT 2000000      // in usec