diff --git a/library/Director/Db.php b/library/Director/Db.php
index 9d3727ba..bc7f45f9 100644
--- a/library/Director/Db.php
+++ b/library/Director/Db.php
@@ -306,7 +306,7 @@ class Db extends DbConnection
     {
         $db = $this->db();
         $query = $db->select()
-            ->from('import_run', 'rowset_checksum')
+            ->from('import_run', $this->dbHexFunc('rowset_checksum'))
             ->where('id = ?', $id);
 
         return $db->fetchOne($query);
@@ -381,7 +381,10 @@ class Db extends DbConnection
             }
         }
 
-        $lastRun = $db->select()->from('import_run', array('rowset_checksum'));
+        $lastRun = $db->select()->from(
+            'import_run',
+            array('checksum' => $this->dbHexFunc('rowset_checksum'))
+        );
 
         if (is_int($source) || ctype_digit($source)) {
             $lastRun->where('source_id = ?', $source);
@@ -391,7 +394,6 @@ class Db extends DbConnection
 
         $lastRun->order('start_time DESC')->limit(1);
         $checksum = $db->fetchOne($lastRun);
-        // TODO: Postgres decoding?
 
         return $this->fetchImportedRowsetRows($checksum, $columns);
     }
@@ -399,6 +401,8 @@ class Db extends DbConnection
     public function fetchImportedRowsetRows($checksum, $columns)
     {
         $db = $this->db();
+        $binchecksum = Util::hex2binary($checksum);
+
         $query = $db->select()->from(
             array('rsr' => 'imported_rowset_row'),
             array(
@@ -419,7 +423,7 @@ class Db extends DbConnection
             array('p' => 'imported_property'),
             'p.checksum = rp.property_checksum',
             array()
-        )->where('rsr.rowset_checksum = ?', $checksum)->order('r.object_name');
+        )->where('rsr.rowset_checksum = ?', $this->quoteBinary($binchecksum))->order('r.object_name');
 
         if ($columns === null) {
             $columns = $this->listImportedRowsetColumnNames($checksum);
@@ -528,7 +532,7 @@ class Db extends DbConnection
             array('rsr' => 'imported_rowset_row'),
             'rsr.row_checksum = rp.row_checksum',
             array()
-        )->where('rsr.rowset_checksum = ?', $checksum);
+        )->where('rsr.rowset_checksum = ?', $this->quoteBinary(Util::hex2binary($checksum)));
 
         return $db->fetchCol($query);
     }
@@ -701,7 +705,7 @@ class Db extends DbConnection
         return $this->getDbType() === 'pgsql';
     }
 
-    protected function dbHexFunc($column)
+    public function dbHexFunc($column)
     {
         if ($this->isPgsql()) {
             return sprintf("LOWER(ENCODE(%s, 'hex'))", $column);
@@ -710,10 +714,10 @@ class Db extends DbConnection
         }
     }
 
-    protected function quoteBinary($binary)
+    public function quoteBinary($binary)
     {
         if ($this->isPgsql()) {
-            return new Zend_Db_Expr("\\x" . bin2hex($binary));
+            return new Zend_Db_Expr("'\\x" . bin2hex($binary) . "'");
         }
 
         return $binary;
diff --git a/library/Director/Import/Import.php b/library/Director/Import/Import.php
index e9035a31..fdbf7800 100644
--- a/library/Director/Import/Import.php
+++ b/library/Director/Import/Import.php
@@ -100,13 +100,16 @@ class Import
             'import_run',
             array(
                 'source_id'       => $this->source->id,
-                'rowset_checksum' => $this->rowsetChecksum(),
+                'rowset_checksum' => $this->quoteBinary($this->rowsetChecksum()),
                 'start_time'      => date('Y-m-d H:i:s'),
                 'succeeded'       => 'y'
             )
         );
-
-        return $this->db->lastInsertId();
+        if ($this->connection->isPgsql()) {
+            return $this->db->lastInsertId('import_run', 'id');
+        } else {
+            return $this->db->lastInsertId();
+        }
     }
 
     /**
@@ -207,7 +210,7 @@ class Import
 
         if (! array_key_exists($checksum, $this->properties)) {
             $this->properties[$checksum] = array(
-                'checksum'       => $checksum,
+                'checksum'       => $this->quoteBinary($checksum),
                 'property_name'  => $key,
                 'property_value' => $value,
                 'format'         => $format
@@ -290,7 +293,7 @@ class Import
             }
 
             $this->rows[$checksum] = array(
-                'checksum'    => $checksum,
+                'checksum'    => $this->quoteBinary($checksum),
                 'object_name' => $object_name
             );
 
@@ -323,7 +326,7 @@ class Import
             $newProperties = $this->newChecksums('imported_property', array_keys($this->properties));
         }
 
-        $db->insert('imported_rowset', array('checksum' => $rowset));
+        $db->insert('imported_rowset', array('checksum' => $this->quoteBinary($rowset)));
 
         foreach ($newProperties as $checksum) {
             $db->insert('imported_property', $this->properties[$checksum]);
@@ -333,7 +336,7 @@ class Import
             $db->insert('imported_row', $rows[$row]);
             foreach ($this->rowProperties[$row] as $property) {
                 $db->insert('imported_row_property', array(
-                    'row_checksum'      => $row,
+                    'row_checksum'      => $this->quoteBinary($row),
                     'property_checksum' => $property
                 ));
             }
@@ -343,8 +346,8 @@ class Import
             $db->insert(
                 'imported_rowset_row',
                 array(
-                    'rowset_checksum' => $rowset,
-                    'row_checksum'    => $row
+                    'rowset_checksum' => $this->quoteBinary($rowset),
+                    'row_checksum'    => $this->quoteBinary($row)
                 )
             );
         }
@@ -414,7 +417,10 @@ class Import
         $query = $db
             ->select()
             ->from($table, 'checksum')
-            ->where('LOWER(HEX(checksum)) IN (?)', $hexed);
+            ->where(
+                $this->connection->dbHexFunc('checksum') . ' IN (?)',
+                $hexed
+            );
 
         $existing = $db->fetchCol($query);
 
@@ -458,4 +464,9 @@ class Import
             $el = $this->sortObject($el);
         }
     }
+
+    protected function quoteBinary($bin)
+    {
+        return $this->connection->quoteBinary($bin);
+    }
 }