diff --git a/AppData/ComLib.cs b/AppData/ComLib.cs
index 1fbb5e4..e7d879d 100644
--- a/AppData/ComLib.cs
+++ b/AppData/ComLib.cs
@@ -1439,7 +1439,7 @@ namespace AppData
                 // salvo in redis
                 cachedCurrBunkTab = tabBunk;
             }
-            if (tabBunk.Count > 0)
+            if (tabBunk != null && tabBunk.Count > 0)
             {
                 answ = tabBunk[0];
             }
diff --git a/NKC_WF/WebUserControls/cmp_MU_svgViewer.ascx.cs b/NKC_WF/WebUserControls/cmp_MU_svgViewer.ascx.cs
index ef1822f..70faaaa 100644
--- a/NKC_WF/WebUserControls/cmp_MU_svgViewer.ascx.cs
+++ b/NKC_WF/WebUserControls/cmp_MU_svgViewer.ascx.cs
@@ -18,7 +18,7 @@ namespace NKC_WF.WebUserControls
                 if (hfBatchId.Value != value.ToString())
                 {
                     hfBatchId.Value = value.ToString();
-                    doUpdate();
+                    //doUpdate();
                 }
             }
             get
diff --git a/NKC_WF/site/MachineUnload.aspx b/NKC_WF/site/MachineUnload.aspx
index 961efac..715f1e1 100644
--- a/NKC_WF/site/MachineUnload.aspx
+++ b/NKC_WF/site/MachineUnload.aspx
@@ -9,46 +9,51 @@
 
 <asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
     <div class="mx-0">
-        <div class="card text-center" style="width: 100%;">
-            <h4 class="card-header bg-secondary text-light"><%: traduci("MachineUnload") %> <sub>(<%: hfBatchID.Value %>)</sub></h4>
-            <div class="card-body py-1 bg-dark">
-                <asp:UpdatePanel runat="server" ID="upnlStats" UpdateMode="Conditional">
-                    <ContentTemplate>
-                        <asp:HiddenField ID="hfBatchID" runat="server" />
-                        <asp:HiddenField ID="hfSheetID" runat="server" />
-                        <uc1:cmp_MU_stats runat="server" ID="cmp_MU_stats" />
-                    </ContentTemplate>
-                </asp:UpdatePanel>
-                <div class="row">
-                    <div class="col-2 pr-0">
-                        <asp:UpdatePanel runat="server" ID="upnlBins" UpdateMode="Conditional">
+<%--        <asp:UpdatePanel runat="server" ID="upnlMain" UpdateMode="Always">
+            <ContentTemplate>--%>
+                <div class="card text-center" style="width: 100%;">
+                    <h4 class="card-header bg-secondary text-light"><%: traduci("MachineUnload") %> <sub>(<%: hfBatchID.Value %>)</sub></h4>
+                    <div class="card-body py-1 bg-dark">
+
+                        <asp:UpdatePanel runat="server" ID="upnlStats" UpdateMode="Conditional">
                             <ContentTemplate>
-                                <uc1:cmp_MU_bins runat="server" ID="cmp_MU_bins" />
+                                <asp:HiddenField ID="hfBatchID" runat="server" />
+                                <asp:HiddenField ID="hfSheetID" runat="server" />
+                                <uc1:cmp_MU_stats runat="server" ID="cmp_MU_stats" />
                             </ContentTemplate>
                         </asp:UpdatePanel>
-                    </div>
-                    <div class="col-8 py-0 my-0 px-0">
-                        <asp:UpdatePanel runat="server" ID="upnlDrawings" UpdateMode="Conditional">
+                        <div class="row">
+                            <div class="col-2 pr-0">
+                                <asp:UpdatePanel runat="server" ID="upnlBins" UpdateMode="Always">
+                                    <ContentTemplate>
+                                        <uc1:cmp_MU_bins runat="server" ID="cmp_MU_bins" />
+                                    </ContentTemplate>
+                                </asp:UpdatePanel>
+                            </div>
+                            <div class="col-8 py-0 my-0 px-0">
+                                <asp:UpdatePanel runat="server" ID="upnlDrawings" UpdateMode="Conditional">
+                                    <ContentTemplate>
+                                        <asp:Timer ID="timerSvg" runat="server" Interval="3000" OnTick="timerSvg_Tick"></asp:Timer>
+                                        <uc1:cmp_MU_svgViewer runat="server" ID="cmp_MU_svgViewer" />
+                                    </ContentTemplate>
+                                </asp:UpdatePanel>
+                            </div>
+                            <div class="col-2 pl-0">
+                                <asp:UpdatePanel runat="server" ID="upnlCarts" UpdateMode="Conditional">
+                                    <ContentTemplate>
+                                        <uc1:cmp_MU_carts runat="server" ID="cmp_MU_carts" />
+                                    </ContentTemplate>
+                                </asp:UpdatePanel>
+                            </div>
+                        </div>
+                        <asp:UpdatePanel runat="server" ID="upnlSuggest" UpdateMode="Conditional">
                             <ContentTemplate>
-                                <asp:Timer ID="timerSvg" runat="server" Interval="2000" OnTick="timerSvg_Tick"></asp:Timer>
-                                <uc1:cmp_MU_svgViewer runat="server" ID="cmp_MU_svgViewer" />
-                            </ContentTemplate>
-                        </asp:UpdatePanel>
-                    </div>
-                    <div class="col-2 pl-0">
-                        <asp:UpdatePanel runat="server" ID="upnlCarts" UpdateMode="Conditional">
-                            <ContentTemplate>
-                                <uc1:cmp_MU_carts runat="server" ID="cmp_MU_carts" />
+                                <uc1:cmp_MU_suggestions runat="server" ID="cmp_MU_suggestions" Visible="false" />
                             </ContentTemplate>
                         </asp:UpdatePanel>
                     </div>
                 </div>
-                <asp:UpdatePanel runat="server" ID="upnlSuggest" UpdateMode="Conditional">
-                    <ContentTemplate>
-                        <uc1:cmp_MU_suggestions runat="server" ID="cmp_MU_suggestions" Visible="false" />
-                    </ContentTemplate>
-                </asp:UpdatePanel>
-            </div>
-        </div>
+            <%--</ContentTemplate>
+        </asp:UpdatePanel>--%>
     </div>
 </asp:Content>
diff --git a/NKC_WF/site/MachineUnload.aspx.cs b/NKC_WF/site/MachineUnload.aspx.cs
index d3ed294..704434c 100644
--- a/NKC_WF/site/MachineUnload.aspx.cs
+++ b/NKC_WF/site/MachineUnload.aspx.cs
@@ -53,56 +53,68 @@ namespace NKC_WF
         private void doUpdate()
         {
             // imposto dati correnti
-            setCurrData();
-            // aggiorno child
-            cmp_MU_stats.BatchId = BatchId;
-            cmp_MU_bins.BatchId = BatchId;
-            cmp_MU_carts.BatchId = BatchId;
-            cmp_MU_svgViewer.BatchId = BatchId;
-            cmp_MU_svgViewer.SheetId = SheetId;
+            bool doUpdate = setCurrData();
+            if (doUpdate)
+            {
+                // aggiorno child
+                cmp_MU_stats.BatchId = BatchId;
+                cmp_MU_bins.BatchId = BatchId;
+                cmp_MU_carts.BatchId = BatchId;
+                cmp_MU_svgViewer.BatchId = BatchId;
+                cmp_MU_svgViewer.SheetId = SheetId;
+            }
         }
         /// <summary>
-        /// Imposta dati correnti (Bunk / Sheet)
+        /// Imposta dati correnti (Bunk / Sheet) indicando SE fare update
         /// </summary>
-        private void setCurrData()
+        private bool setCurrData()
         {
+            bool needUpdate = false;
             // recupero bunk corrente...
             DS_App.StackListRow currBunk = ComLib.getCurrBunk();
             if (currBunk != null)
             {
-                BatchId = currBunk.BatchID;
+                if (BatchId != currBunk.BatchID)
+                {
+                    BatchId = currBunk.BatchID;
+                    needUpdate = true;
+                }
+
                 DS_App.SheetListRow currSheet = ComLib.getCurrSheet(BatchId);
                 if (currSheet != null)
                 {
-                    SheetId = currSheet.SheetID;
+                    if (SheetId != currSheet.SheetID)
+                    {
+                        SheetId = currSheet.SheetID;
+                        needUpdate = true;
+                    }
                 }
             }
             else
             {
                 BatchId = 0;
             }
+            return needUpdate;
         }
 
         protected void timerSvg_Tick(object sender, EventArgs e)
         {
             // in base al num di sec dell'ora decido cosa aggiornare...
             int counter = numWaitSvg;
-            // ogni 10 generale
-            if (counter % 10 == 0)
-            {
-                doUpdate();
-            }
-            // ogni 5 stats
-            else if (counter % 5 == 0)
+            // ogni 2 sec bin/cart
+            doUpdate();
+            if (counter % 5 == 0)
             {
                 cmp_MU_stats.doUpdate();
+                upnlStats.DataBind();
             }
-            // ogni 2 sec bin/cart
-            else if (counter % 2 == 0)
-            {
-                cmp_MU_carts.doUpdate();
-                cmp_MU_bins.doUpdate();
-            }
+            //if (counter % 2 == 0)
+            //{
+            cmp_MU_carts.doUpdate();
+            upnlCarts.DataBind();
+            cmp_MU_bins.doUpdate();
+            upnlCarts.DataBind();
+            //}
             incrNumWait();
         }
         /// <summary>
@@ -131,6 +143,7 @@ namespace NKC_WF
             if (numWaitSvg > 10)
             {
                 memLayer.ML.resetRCnt(redProdReq);
+                Response.Redirect(Request.RawUrl);
             }
             memLayer.ML.setRCntI(redProdReq);
         }