diff --git a/Link.cs b/Link.cs
index 3808423..9395ef0 100644
--- a/Link.cs
+++ b/Link.cs
@@ -301,7 +301,7 @@ public static Link Create(Link source, Link linker, Link target)
             Link link = CreateLink(source, linker, target);
             if (link == null)
             {
-                throw new OutOfMemoryException();
+                throw new InvalidOperationException("Невозможно создать связь.");
             }
             CreatedEvent.Invoke(new LinkDefinition(link));
             return link;
diff --git a/Net.cs b/Net.cs
index 28a3e4e..9130d13 100644
--- a/Net.cs
+++ b/Net.cs
@@ -50,7 +50,7 @@ public enum NetMapping : long
         Code
     }
 
-    public class Net
+    public static class Net
     {
         public static Link Link { get; private set; }
         public static Link Thing { get; private set; }
diff --git a/NumberHelpers.cs b/NumberHelpers.cs
index b8f38a7..6c1623d 100644
--- a/NumberHelpers.cs
+++ b/NumberHelpers.cs
@@ -70,7 +70,8 @@ public static Link FromNumber(long number)
                 {
                     if ((number & key) == key)
                     {
-                        links[i++] = FromPowerOf2(powerOf2);
+                        links[i] = FromPowerOf2(powerOf2);
+                        i++;
                     }
                 }
             }
diff --git a/Sequences/SequenceHelpers.cs b/Sequences/SequenceHelpers.cs
index 074f832..315cc05 100644
--- a/Sequences/SequenceHelpers.cs
+++ b/Sequences/SequenceHelpers.cs
@@ -9,7 +9,7 @@ namespace Platform.Data.Triplets.Sequences
     /// TODO: Check that CollectMatchingSequences algorithm is working, if not throw it away.
     /// TODO: Think of the abstraction on Sequences that can be equally usefull for triple links, doublet links and so on.
     /// </remarks>
-    public class SequenceHelpers
+    public static class SequenceHelpers
     {
         public static readonly int MaxSequenceFormatSize = 20;