diff --git a/src/GridFieldAddNewInlineButton.php b/src/GridFieldAddNewInlineButton.php
index abb05dc..3e030ec 100755
--- a/src/GridFieldAddNewInlineButton.php
+++ b/src/GridFieldAddNewInlineButton.php
@@ -3,6 +3,7 @@
 namespace Symbiote\GridFieldExtensions;
 
 use SilverStripe\Core\Convert;
+use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Forms\Form;
 use SilverStripe\Forms\GridField\GridField;
 use SilverStripe\Forms\GridField\GridField_HTMLProvider;
@@ -13,7 +14,6 @@ use SilverStripe\ORM\DataObjectInterface;
 use SilverStripe\ORM\FieldType\DBField;
 use SilverStripe\ORM\ManyManyList;
 use SilverStripe\View\ArrayData;
-use SilverStripe\Core\Injector\Injector;
 use SilverStripe\View\Requirements;
 use Exception;
 
diff --git a/src/GridFieldAddNewMultiClass.php b/src/GridFieldAddNewMultiClass.php
index 9afc7cd..e71da83 100755
--- a/src/GridFieldAddNewMultiClass.php
+++ b/src/GridFieldAddNewMultiClass.php
@@ -244,7 +244,7 @@ class GridFieldAddNewMultiClass implements GridField_HTMLProvider, GridField_URL
 
         GridFieldExtensions::include_requirements();
 
-        $field = new DropdownField(sprintf('%s[ClassName]', self::POST_KEY), '', $classes, $this->defaultClass);
+        $field = new DropdownField(sprintf('%s[%s]', __CLASS__, $grid->getName()), '', $classes, $this->defaultClass);
         if (Config::inst()->get(__CLASS__, 'showEmptyString')) {
             $field->setEmptyString(_t('GridFieldExtensions.SELECTTYPETOCREATE', '(Select type to create)'));
         }
diff --git a/src/GridFieldEditableColumns.php b/src/GridFieldEditableColumns.php
index 8b34d12..6e6b192 100644
--- a/src/GridFieldEditableColumns.php
+++ b/src/GridFieldEditableColumns.php
@@ -22,6 +22,7 @@ use SilverStripe\Forms\ReadonlyField;
 use SilverStripe\ORM\DataList;
 use SilverStripe\ORM\DataObject;
 use SilverStripe\ORM\DataObjectInterface;
+use SilverStripe\ORM\FieldType\DBField;
 use SilverStripe\ORM\ManyManyList;
 
 /**
diff --git a/src/GridFieldOrderableRows.php b/src/GridFieldOrderableRows.php
index 79f1b24..1003c96 100755
--- a/src/GridFieldOrderableRows.php
+++ b/src/GridFieldOrderableRows.php
@@ -21,6 +21,7 @@ use SilverStripe\ORM\DB;
 use SilverStripe\ORM\ManyManyList;
 use SilverStripe\ORM\Map;
 use SilverStripe\ORM\SS_List;
+use SilverStripe\ORM\FieldType\DBDatetime;
 use SilverStripe\Versioned\Versioned;
 use SilverStripe\View\ViewableData;
 
@@ -542,6 +543,7 @@ class GridFieldOrderableRows extends RequestHandler implements
         // match to order the objects.
         if (!$isVersioned) {
             $sortTable = $this->getSortTable($list);
+            $now = DBDatetime::now()->Rfc2822();
             $additionalSQL = '';
             $baseTable = $sortTable;
             if (class_exists($sortTable)) {
@@ -549,7 +551,7 @@ class GridFieldOrderableRows extends RequestHandler implements
             }
             $isBaseTable = ($baseTable == $sortTable);
             if (!$list instanceof ManyManyList && $isBaseTable) {
-                $additionalSQL = ', "LastEdited" = NOW()';
+                $additionalSQL = ", \"LastEdited\" = '$now'";
             }
 
             foreach ($sortedIDs as $sortValue => $id) {
@@ -565,8 +567,9 @@ class GridFieldOrderableRows extends RequestHandler implements
 
                     if (!$isBaseTable) {
                         DB::query(sprintf(
-                            'UPDATE "%s" SET "LastEdited" = NOW() WHERE %s',
+                            'UPDATE "%s" SET "LastEdited" = \'%s\' WHERE %s',
                             $baseTable,
+                            $now,
                             $this->getSortTableClauseForIds($list, $id)
                         ));
                     }
@@ -595,7 +598,7 @@ class GridFieldOrderableRows extends RequestHandler implements
         $field  = $this->getSortField();
         $table  = $this->getSortTable($list);
         $clause = sprintf('"%s"."%s" = 0', $table, $this->getSortField());
-
+        $now = DBDatetime::now()->Rfc2822();
         $additionalSQL = '';
         $baseTable = $table;
         if (class_exists($table)) {
@@ -603,7 +606,7 @@ class GridFieldOrderableRows extends RequestHandler implements
         }
         $isBaseTable = ($baseTable == $table);
         if (!$list instanceof ManyManyList && $isBaseTable) {
-            $additionalSQL = ', "LastEdited" = NOW()';
+            $additionalSQL = ", \"LastEdited\" = '$now'";
         }
 
         foreach ($list->where($clause)->column('ID') as $id) {
@@ -621,8 +624,9 @@ class GridFieldOrderableRows extends RequestHandler implements
 
             if (!$isBaseTable) {
                 DB::query(sprintf(
-                    'UPDATE "%s" SET "LastEdited" = NOW() WHERE %s',
+                    'UPDATE "%s" SET "LastEdited" = \'%s\' WHERE %s',
                     $baseTable,
+                    $now,
                     $this->getSortTableClauseForIds($list, $id)
                 ));
             }
diff --git a/tests/GridFieldConfigurablePaginatorTest.php b/tests/GridFieldConfigurablePaginatorTest.php
index a8b4418..d61aba6 100644
--- a/tests/GridFieldConfigurablePaginatorTest.php
+++ b/tests/GridFieldConfigurablePaginatorTest.php
@@ -165,7 +165,7 @@ class GridFieldConfigurablePaginatorTest extends SapphireTest
     public function testGetPageSizesAsList()
     {
         $paginator = new GridFieldConfigurablePaginator(10, array(10, 20, 30));
-        $this->assertDOSEquals(array(
+        $this->assertListEquals(array(
             array('Size' => '10', 'Selected' => true),
             array('Size' => '20', 'Selected' => false),
             array('Size' => '30', 'Selected' => false),