http://bugs.winehq.org/show_bug.cgi?id=20059
--- Comment #5 from Hans Leidekker hans@meelstraat.net 2009-09-16 07:05:58 --- That's progress because you're not seeing this message anymore:
err:msi:source_matches_volume Failed to get volume information
Now try this patch:
http://www.winehq.org/pipermail/wine-patches/2009-September/078514.html
on top of the previous patch and reinstall office in a clean prefix. Then install either sp1 or sp2.