SQL Server 2005 setup unexpected failure during setup

I'm trying to install SQL Server 2005 Enterprise on Windows 2003 R2 SP2 (ESXi 5.0.0 guest). After installation of backward compatibility files and prior to MSXML6, I receive this error:

There was an unexpected failure during the setup wizard. You may review the setup logs and/or click the help button for more information.

This is a part of core log file containing error:

Running: InstallSqlAction.9 at: 2015/9/5 10:15:10
Installing: msxml6 on target: MONITORING
Error: Action "InstallSqlAction.9" threw an exception during execution.  Error information reported during run:
Target collection includes the local machine.
Invoking installPackage() on local machine.
Fatal Exception caught while installing package: "9"
        Error Code: 0x8007064a (1610)
Windows Error Text: The configuration data for this product is corrupt.  Contact your support personnel.

  Source File Name: sqlsetupactions\sqlsetuppackageutil.cpp
Compiler Timestamp: Mon Jun 13 14:30:05 2005
     Function Name: sqls::getPackageIsInstalled
Source Line Number: 50

---- Context -----------------------------------------------
sqls::InstallPackageAction::perform

WinException caught while installing package. : 1603
        Error Code: 0x80070643 (1603)
Windows Error Text: Fatal error during installation.

  Source File Name: packageengine\installpackageaction.cpp
Compiler Timestamp: Fri Jul  1 01:28:25 2005
     Function Name: sqls::InstallPackageAction::perform
Source Line Number: 167

It seems that configuration file has a problem, but what?! How can I fix this?

PS: The reason of installing SQL 2005 on Windows 2003 is that I have a network monitoring application which works only on this combination and can't upgrade to its latest version.