http://www.google.com/search?&q="Windows+Media+Technologies+is+incompatible+with+this+version"
http://www.microsoft.com/windows/windowsmedia/knowledgecenter/mediaadvice/0073.mspx#EW
Why do I get the message, "This version of Windows Media Technologies is
incompatible with this version of Windows" when I try to install the Player?
There might be a problem with one or more of the system files on your
computer. Try running the System File Checker tool to scan and restore
missing or damaged system files, and then run Windows Media Player Setup
again.
To run System File Checker, do the following:
1.Click Start, click All Programs, click Accessories, and then click Command
Prompt.
2.In the Command Prompt window, type Sfc /scannow. For example:
C:\Documents and Settings\username>Sfc /scannow
For more information about the System File Checker tool, see article 310747,
"Description of WindowsXP and Windows Server2003 System File Checker
(Sfc.exe)," in the Microsoft Knowledge Base.
© 2005 Microsoft Corporation. All rights reserved.
See also:
http://msmvps.com/chrisl/archive/2004/10/02/14743.aspx
And from Zach [MS] site:
http://www.nwlink.com/~zachd/pss/pss.html
<quote>
Q: Why do I get the error message "This version of Windows Media
Technologies is incompatible with this version of Windows" when I try to
install Media Player?
A: You can't get this message without system files being deleted or
corrupted, so something is wrong with your system.
You can fix this in the following fashions:
* Either a system restore back before the files were deleted OR a reversion
of a previous system restore that caused this problem.
* An OS reinstall/repair using Repair mode (which I believe would require an
SP2 disk?)
* Reversion back to SP1, reinstallation of WMP, upgrade back to SP2. Or
reverting to SP1 and simply reinstalling SP2 should work too.
</quote>
--
Ramesh, Microsoft MVP
Windows XP Shell/User
Windows XP Troubleshooting
http://www.winhelponline.com