diff --git a/of-save/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupModVer13.java b/of-save/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupModVer13.java
new file mode 100644
index 0000000..ef92d83
--- /dev/null
+++ b/of-save/lib/gen-src/main/java/org/projectfloodlight/openflow/protocol/ver13/OFGroupModVer13.java
@@ -0,0 +1,71 @@
+// Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior University
+// Copyright (c) 2011, 2012 Open Networking Foundation
+// Copyright (c) 2012, 2013 Big Switch Networks, Inc.
+// This library was generated by the LoxiGen Compiler.
+// See the file LICENSE.txt which should have been included in the source distribution
+
+// Automatically generated by LOXI from template of_virtual_class.java
+// Do not modify
+
+package org.projectfloodlight.openflow.protocol.ver13;
+
+import org.projectfloodlight.openflow.protocol.*;
+import org.projectfloodlight.openflow.protocol.action.*;
+import org.projectfloodlight.openflow.protocol.actionid.*;
+import org.projectfloodlight.openflow.protocol.bsntlv.*;
+import org.projectfloodlight.openflow.protocol.errormsg.*;
+import org.projectfloodlight.openflow.protocol.meterband.*;
+import org.projectfloodlight.openflow.protocol.instruction.*;
+import org.projectfloodlight.openflow.protocol.instructionid.*;
+import org.projectfloodlight.openflow.protocol.match.*;
+import org.projectfloodlight.openflow.protocol.oxm.*;
+import org.projectfloodlight.openflow.protocol.queueprop.*;
+import org.projectfloodlight.openflow.types.*;
+import org.projectfloodlight.openflow.util.*;
+import org.projectfloodlight.openflow.exceptions.*;
+import org.jboss.netty.buffer.ChannelBuffer;
+
+abstract class OFGroupModVer13 {
+    // version: 1.3
+    final static byte WIRE_VERSION = 4;
+    final static int MINIMUM_LENGTH = 16;
+
+
+    public final static OFGroupModVer13.Reader READER = new Reader();
+
+    static class Reader implements OFMessageReader<OFGroupMod> {
+        @Override
+        public OFGroupMod readFrom(ChannelBuffer bb) throws OFParseError {
+            if(bb.readableBytes() < MINIMUM_LENGTH)
+                return null;
+            int start = bb.readerIndex();
+            // fixed value property version == 4
+            byte version = bb.readByte();
+            if(version != (byte) 0x4)
+                throw new OFParseError("Wrong version: Expected=OFVersion.OF_13(4), got="+version);
+            // fixed value property type == 15
+            byte type = bb.readByte();
+            if(type != (byte) 0xf)
+                throw new OFParseError("Wrong type: Expected=OFType.GROUP_MOD(15), got="+type);
+            int length = U16.f(bb.readShort());
+            if(length < MINIMUM_LENGTH)
+                throw new OFParseError("Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
+            U32.f(bb.readInt());
+            short command = bb.readShort();
+            bb.readerIndex(start);
+            switch(command) {
+               case (short) 0x0:
+                   // discriminator value OFGroupModCommand.ADD=0 for class OFGroupAddVer13
+                   return OFGroupAddVer13.READER.readFrom(bb);
+               case (short) 0x2:
+                   // discriminator value OFGroupModCommand.DELETE=2 for class OFGroupDeleteVer13
+                   return OFGroupDeleteVer13.READER.readFrom(bb);
+               case (short) 0x1:
+                   // discriminator value OFGroupModCommand.MODIFY=1 for class OFGroupModifyVer13
+                   return OFGroupModifyVer13.READER.readFrom(bb);
+               default:
+                   throw new OFParseError("Unknown value for discriminator command of class OFGroupModVer13: " + command);
+            }
+        }
+    }
+}