diff --git a/Stundensheet.xlsx b/Stundensheet.xlsx
index 8f701fd0..45f82a26 100644
Binary files a/Stundensheet.xlsx and b/Stundensheet.xlsx differ
diff --git a/nsw/Source/bsmd.database/DBManager.cs b/nsw/Source/bsmd.database/DBManager.cs
index 333f8b49..3a33306f 100644
--- a/nsw/Source/bsmd.database/DBManager.cs
+++ b/nsw/Source/bsmd.database/DBManager.cs
@@ -212,20 +212,24 @@ namespace bsmd.database
 
         public List<MessageCore> GetMessageCoresWithNSWStatusFlag()
         {
+            List<MessageCore> result = new List<MessageCore>();
             MessageCore aMessageCore = new MessageCore();
-            SqlCommand cmd = new SqlCommand();
+            SqlCommand cmd = new SqlCommand();            
             aMessageCore.PrepareLoadCommand(cmd, Message.LoadFilter.QUERY_NSW_STATUS);
 
             SqlDataReader reader = this.PerformCommand(cmd);
-            List<DatabaseEntity> cores = aMessageCore.LoadList(reader);
-            List<MessageCore> result = new List<MessageCore>();
-            foreach (MessageCore core in cores)
+            if (reader != null)
             {
-                this.LoadCustomer(core);
-                result.Add(core);
-            }
+                List<DatabaseEntity> cores = aMessageCore.LoadList(reader);
 
-            if (this._closeConnectionAfterUse) this.Disconnect();
+                foreach (MessageCore core in cores)
+                {
+                    this.LoadCustomer(core);
+                    result.Add(core);
+                }
+
+                if (this._closeConnectionAfterUse) this.Disconnect();
+            }
 
             return result;
         }
diff --git a/nsw/Source/bsmd.database/Properties/AssemblyProductInfo.cs b/nsw/Source/bsmd.database/Properties/AssemblyProductInfo.cs
index 7e7a4003..d422bd48 100644
--- a/nsw/Source/bsmd.database/Properties/AssemblyProductInfo.cs
+++ b/nsw/Source/bsmd.database/Properties/AssemblyProductInfo.cs
@@ -2,6 +2,6 @@
 
 [assembly: AssemblyCompany("schick Informatik")]
 [assembly: AssemblyProduct("BSMD NSW interface")]
-[assembly: AssemblyInformationalVersion("5.9.0")]
+[assembly: AssemblyInformationalVersion("5.9.1")]
 [assembly: AssemblyCopyright("Copyright ©  2014-2019 schick Informatik")]
 [assembly: AssemblyTrademark("")]
\ No newline at end of file
diff --git a/nsw/Source/bsmd.database/Properties/AssemblyProjectInfo.cs b/nsw/Source/bsmd.database/Properties/AssemblyProjectInfo.cs
index ec4c856e..8d5d1682 100644
--- a/nsw/Source/bsmd.database/Properties/AssemblyProjectInfo.cs
+++ b/nsw/Source/bsmd.database/Properties/AssemblyProjectInfo.cs
@@ -1,4 +1,4 @@
 using System.Reflection;
 
-[assembly: AssemblyVersion("5.9.0.*")]
+[assembly: AssemblyVersion("5.9.1.*")]