diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index eb260de9a99..e57fb160119 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -1244,5 +1244,21 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2012092600.00);
     }
 
+    if ($oldversion < 2012101500.01) {
+        // Find all orphaned blog associations that might exist.
+        $sql = "SELECT ba.id
+                  FROM {blog_association} ba
+             LEFT JOIN {post} p
+                    ON p.id = ba.blogid
+                 WHERE p.id IS NULL";
+        $orphanedrecordids = $DB->get_records_sql($sql);
+        // Now delete these associations.
+        foreach ($orphanedrecordids as $orphanedrecord) {
+            $DB->delete_records('blog_association', array('id' => $orphanedrecord->id));
+        }
+
+        upgrade_main_savepoint(true, 2012101500.01);
+    }
+
     return true;
 }
diff --git a/version.php b/version.php
index abad159526f..0086c02f532 100644
--- a/version.php
+++ b/version.php
@@ -30,7 +30,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 
-$version  = 2012101500.00;              // YYYYMMDD      = weekly release date of this DEV branch
+$version  = 2012101500.01;              // YYYYMMDD      = weekly release date of this DEV branch
                                         //         RR    = release increments - 00 in DEV branches
                                         //           .XX = incremental changes