If you are experiencing an error popup in Windows Server 2003 when using the Windows Media Services snapin with error 0x80041010 or 0x80041011, this is caused by associated WMI information that becomes unregistered and inaccessible to the application.  I saw this on my personal SBS box after I migrated it to a new motherboard with a bare metal restore.  How to fix it:

Search your computer for a file named lnwmsevents.mof.  Copy or extract this file (it might be in a .cab file) to the desktop.  If you can't find this file, it should be included in Service Pack 2.

From a command prompt do:

mofcomp lnwmsevents.mof
Microsoft (R) 32-bit MOF Compiler Version 5.2.3790.3959
Copyright (c) Microsoft Corp. 1997-2001. All rights reserved.
Parsing MOF file: lnwmsevents.mof
MOF file has been successfully parsed
Storing data in the repository...
Done!

Open the Windows Media Services console, click on Properties/Event Notification, and make sure the WMS WMI Event Handler is enabled.  If it is, WMI is now registered properly and your WMI errors should disappear.

Take care,

Dave