diff --git a/workflow/engine/controllers/pmTablesProxy.php b/workflow/engine/controllers/pmTablesProxy.php
index 03085e35f..6b91b099b 100644
--- a/workflow/engine/controllers/pmTablesProxy.php
+++ b/workflow/engine/controllers/pmTablesProxy.php
@@ -334,7 +334,7 @@ class pmTablesProxy extends HttpProxyController
   public function delete($httpData) 
   {
     G::LoadClass('reportTables');
-    $rows = G::json_decode($httpData->rows);
+    $rows = G::json_decode(stripslashes($httpData->rows));
     $rp = new reportTables();
     $at = new AdditionalTables();
     
@@ -403,7 +403,7 @@ class pmTablesProxy extends HttpProxyController
    */
   public function dataCreate($httpData)
   {
-    $rows = G::json_decode($httpData->rows);
+    $rows = G::json_decode(stripslashes($httpData->rows));
     
     require_once 'classes/model/AdditionalTables.php';
     $oAdditionalTables = new AdditionalTables();
@@ -495,7 +495,7 @@ class pmTablesProxy extends HttpProxyController
 
     require_once $sPath . $this->className . '.php';
 
-    $rows = G::json_decode($httpData->rows);
+    $rows = G::json_decode(stripslashes($httpData->rows));
     
     if (is_array($rows)) {
       foreach($rows as $row) {
@@ -791,8 +791,8 @@ class pmTablesProxy extends HttpProxyController
   {
     require_once 'classes/model/AdditionalTables.php';
 
-    $tablesToExport = json_decode(stripslashes($httpData->rows));
-      
+    $tablesToExport = G::json_decode(stripslashes($httpData->rows));
+          
     try{
       G::LoadCLass('net');
       $net = new NET(G::getIpAddress());
diff --git a/workflow/engine/templates/pmTables/data.js b/workflow/engine/templates/pmTables/data.js
index 108ab4965..519f5b12a 100644
--- a/workflow/engine/templates/pmTables/data.js
+++ b/workflow/engine/templates/pmTables/data.js
@@ -291,13 +291,13 @@ NewPMTableRow = function(){
   }
 
   var row = new PMRow(new props);
-  length = infoGrid.getStore().data.length;
+  len = infoGrid.getStore().data.length;
   
   editor.stopEditing();
-  store.insert(length, row);
+  store.insert(len, row);
   infoGrid.getView().refresh();
-  infoGrid.getSelectionModel().selectRow(length);
-  editor.startEditing(length);
+  infoGrid.getSelectionModel().selectRow(len);
+  editor.startEditing(len);
 };
 
 //Load PM Table Edition Row Form
diff --git a/workflow/engine/templates/pmTables/edit.js b/workflow/engine/templates/pmTables/edit.js
index 15538e3e6..b82f312b9 100644
--- a/workflow/engine/templates/pmTables/edit.js
+++ b/workflow/engine/templates/pmTables/edit.js
@@ -280,10 +280,12 @@ Ext.onReady(function(){
     },
     afteredit: function(roweditor, rowIndex) {
       row = assignedGrid.getSelectionModel().getSelected();
+      //if a column was set as PK so can't be null
       if (row.get('field_key') == true) {
         row.data.field_null = false;
-        row.commit();
+        
       }
+      row.commit();
     }
   });
 
@@ -616,44 +618,50 @@ function createReportTable()
 
   //validate columns count
   if(allRows.getCount() == 0) {
-    PMExt.error(_('ID_ERROR'), 'Set columns for this Report Table please.');
+    PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT7'));
     return false;
   }
+  var fieldsNames = new Array();
 
-  for (var r=0; r < allRows.getCount(); r++) {
-    row = allRows.getAt(r);
+  for (var i = 0; i < allRows.getCount(); i++) {
+    row = allRows.getAt(i);
+
+    if (in_array(row.data['field_name'], fieldsNames)) {
+      PMExt.error(_('ID_ERROR'),_('ID_PMTABLES_ALERT1') + ' <b>' + row.data['field_name']+'</b>');
+      return false;
+    }
 
     // validate that fieldname is not empty
     if(row.data['field_name'].trim() == '') {
-      PMExt.error(_('ID_ERROR'), 'Field Name for all columns is required.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT2'));
       return false;
     }
 
     if(row.data['field_label'].trim() == '') {
-      PMExt.error(_('ID_ERROR'), 'Field Label for all columns is required.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT3'));
       return false;
     }
 
     if (row.data['field_type'] == '') {
-      PMExt.error(_('ID_ERROR'), 'Set a field type for <b>'+row.data['field_name']+'</b> please.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT4') + ' <b>'+row.data['field_name']+'</b>');
       return false;
     }
 
     // validate field size for varchar & int column types
     if ((row.data['field_type'] == 'VARCHAR' || row.data['field_type'] == 'INT') && row.data['field_size'] == '') {
-      PMExt.error(_('ID_ERROR'), 'Set a field size for '+row.data['field_name']+' ('+row.data['field_type']+') please.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT5')+' '+row.data['field_name']+' ('+row.data['field_type']+').');
       return false;
     }
 
     if (row.data['field_key']) {
       hasSomePrimaryKey = true;
     }
-
+    fieldsNames.push(row.data['field_name']);
     columns.push(row.data);
   }
 
   if (!hasSomePrimaryKey) {
-    PMExt.error(_('ID_ERROR'), 'You need set one column at least as Primary Key.');
+    PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT6'));
     return;
   }
 
@@ -912,3 +920,11 @@ function loadTableRowsFromArray(records)
     store.add(row);
   }
 }
+
+
+function in_array(needle, haystack) {
+  for(var i in haystack) {
+      if(haystack[i] == needle) return true;
+  }
+  return false;
+}
\ No newline at end of file
diff --git a/workflow/engine/templates/pmTables/editReport.js b/workflow/engine/templates/pmTables/editReport.js
index 29914497a..c0941226c 100644
--- a/workflow/engine/templates/pmTables/editReport.js
+++ b/workflow/engine/templates/pmTables/editReport.js
@@ -892,27 +892,33 @@ function createReportTable()
 
   //validate columns count
   if(allRows.getCount() == 0) {
-    PMExt.error(_('ID_ERROR'), 'Set columns for this Report Table please.');
+    PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT7'));
     return false;
   }
+  var fieldsNames = new Array();
 
   for (var r=0; r < allRows.getCount(); r++) {
     row = allRows.getAt(r);
 
+    if (in_array(row.data['field_name'], fieldsNames)) {
+      PMExt.error(_('ID_ERROR'),_('ID_PMTABLES_ALERT1') + ' <b>' + row.data['field_name']+'</b>');
+      return false;
+    }
+
     // validate that fieldname is not empty
     if(row.data['field_name'].trim() == '') {
-      PMExt.error(_('ID_ERROR'), 'Field Name for "'+row.data['field_dyn']+'" is required.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT2'));
       return false;
     }
 
     if(row.data['field_label'].trim() == '') {
-      PMExt.error(_('ID_ERROR'), 'Field Label for all columns is required.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT3'));
       return false;
     }
 
     // validate field size for varchar & int column types
     if ((row.data['field_type'] == 'VARCHAR' || row.data['field_type'] == 'INT') && row.data['field_size'] == '') {
-      PMExt.error(_('ID_ERROR'), 'Set a field size for '+row.data['field_name']+' ('+row.data['field_type']+') please.');
+      PMExt.error(_('ID_ERROR'), _('ID_PMTABLES_ALERT5')+' '+row.data['field_name']+' ('+row.data['field_type']+').');
       return false;
     }
 
@@ -1305,4 +1311,11 @@ function verifyTableLimit()
     return false;
   }
   return true;
+}
+
+function in_array(needle, haystack) {
+  for(var i in haystack) {
+      if(haystack[i] == needle) return true;
+  }
+  return false;
 }
\ No newline at end of file