Update IOB BASE:

- aggiunto InitializeAsync
- gestione override x ogni IOB

IOB-WIN-SQL/AdapterFormNext.cs

@@ -21,7 +21,7 @@ namespace IOB_WIN_SQL
         /// <summary>
         /// carica IOB richiesto
         /// </summary>
-        protected override void loadIobType()
+        protected override async Task loadIobType()
         {
             if (IOBConfFull != null)
             {
@@ -54,6 +54,10 @@ namespace IOB_WIN_SQL
                         btnStart.Enabled = false;
                         break;
                 }
+                if (!await iobInitAsync())
+                {
+                    return;
+                }
                 UpdateDisplTypeIobSel();
             }
         }