Index: branches/5.2.x/core/install/upgrades.sql
===================================================================
diff -u -N -r15363 -r15373
--- branches/5.2.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 15363)
+++ branches/5.2.x/core/install/upgrades.sql	(.../upgrades.sql)	(revision 15373)
@@ -2749,4 +2749,4 @@
 # ===== v 5.2.0-RC1 =====
 UPDATE LanguageLabels SET l<%PRIMARY_LANGUAGE%>_Translation = '&lt;TITLE&gt; Tag' WHERE PhraseKey = 'LA_FLD_PAGECONTENTTITLE';
 ALTER TABLE EmailLog ADD EventType TINYINT(4) NULL AFTER EventName;
-DELETE FROM UserPersistentSessionData WHERE VariableName = 'email-log[Default]columns_.';
+DELETE FROM UserPersistentSessionData WHERE VariableName IN ('email-log[Default]columns_.', 'promo-block[Default]columns_.');