1.1.0.5 --> 1.2.2 had 1 SQL errors have occurred - now what?

[mayday]

Just went through the upgrade process from 1.1.0.5 --> 1.2.2

At the end the installer gave me the message:
--------------------------------------------------------
Update is finished.

Unfortunately, 1 SQL errors have occurred.

View the log
SET NAMES 'utf8'

/* ##################################### */ /* STRUCTURE */ /* ##################################### */ DROP TABLE IF EXISTS ps_order_customization_return

ALTER TABLE ps_cart ADD id_guest INT UNSIGNED NULL AFTER id_customer
--------------------------------------------------------

What do I need to do now? Should I try running this sql directly on the DB?

Any help greatly appreciated.

[thehandlestudio]

i to have had this error on upgrading any answers to this problem??