Fix confirmed.  Now it installs on my system (as a fresh install.  I did not try the upgrade wizard).  And BTW: did I remember to congratulate the very nice rollback feature?

Two more questions comments:

1)
Your default install path is \program files [(x86)]. You copy the /datadir as a subfolder of /basedirr.  This will cause problems on Vista+ with UAC enabled if the server is ever started from commandline as a non-service (also if the user doing so is an administrator user).  Problem is that UAC will 'virtualize' every database file that is written to.  Any change to database (DDL, DM, logs - whatever) will be lost next time the server starts as a service. 

I realize that most Windows users will never start the server from commandline. But still in case \program files\.. is selected as /basedir, /datadir should be in \program data I think (MS recommendation for UAC compliance with non-user programs).

Refer:
SHOW VARIABLES LIKE 'basedir'; -- C:\Program Files\MariaDB 5.2\
SHOW VARIABLES LIKE 'datadir'; -- C:\Program Files\MariaDB 5.2\data\


2) There is no my.ini generated with a fresh install as far as I can see - so the server probably runs (it does!) with very low default buffer settings etc.  Also latin1 charset and MyISAM will be default.  I think a my.ini with settings fit for a 1GB-2GB RAM machine should be generated - and with a few configuration options.  And a my.ini will be required to solve 1) anyway. 

But still it is a good installer (and there is a 64 bit one as well), so this is an important step in the right direction.  So thanks for your effort!

-- Peter

On Wed, Feb 2, 2011 at 14:37, Peter Laursen <peter_laursen@webyog.com> wrote:
I am a little bit busy now, but will confirm tonight. -- Peter


On Wed, Feb 2, 2011 at 14:12, Vladislav Vaintroub <wlad@montyprogram.com> wrote:


From: Peter Laursen [mailto:peter_laursen@webyog.com]
Sent: Dienstag, 1. Februar 2011 20:31
To: Vladislav Vaintroub
Cc: maria-developers@lists.launchpad.net
Subject: Re: [Maria-developers] Windows installer MWL#55 finished.

>It is a Danish Windows (Home Premium 64 bit).

Hi Peter,
As it turns out,  installer had the same "localization" problem registering service on German Windows.  Fixed  now,  I uploaded the msis to the same place http://cid-ff0c950417b4f8a4.office.live.com/browse.aspx/share

Thanks,
Wlad