Error: "Class not registered" after installing and starting up Space Manager 5.7.3. (4284753)

Error received after installing and starting up Space Manager with LiveReorg v5.7.3 when entering the license key:

"Class not registered"

Thereafter, starting Space Manager pops up the "Class not registered" just before the connection window.

The MSXML Parser version 4.0 (msxml4.dll and msxml4r.dll) maybe missing and/or not registered.

Download and install MSXML 4.0 Service Pack 2:

1) Download MSXML Parser from Microsoft's web site at the following link:
http://www.microsoft.com/downloads/details.aspx?FamilyID=3144b72b-b4f2-46da-b4b6-c5d7485f2b42&displaylang=en

2) Install the MSXML Parser by doubleclicking on the msxml.msi.

3) Re-start SpaceManager with LiveReorg.

NOTE:
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Latest version of Microsoft parser is MSXML 4.0 SP2, and if installed, this should be listed in Add/Remove Programs of Control Panel as "MSXML 4.0 SP2 Parser and SDK".

Different versions of MSXML parser can co-exist on one PC. You can see them in C:\WINNT\system32\
For instance, you may see the following DLLs already installed on your system.
- msxml.dll
- msxml2.dll
- msxml2r.dll
- msxml3.dll
- msxml3r.dll
- msxmlr.dll

After downloading and installing the latest MSXML parser, it will add the following dll's to the system32 directory:
- msxml4.dll
- msxml4r.dll

You should also now see "MSXML 4.0 SP2 Parser and SDK" in the "Add/Remove" window of Control Panel.