http://bugs.winehq.org/show_bug.cgi?id=26807
--- Comment #5 from boskar bozkar@gmail.com 2011-05-21 02:19:15 CDT --- Confirming, PowerPoint is running correctly for me in 1.3.20.
This is probably an installation issue, (or something broke my installation) as PowerPoint installed in some previous wine version run in 1.3.20 does not work.