The script 'AD Replication Monitoring' The WMI Replication Provider is not installed. The error returned was: '' (0x8004100E)

How do I install the WMI replication provider (and where do I get it from?)

Contributed By: Mike Betts, MVP MOM
It's on the MOM CD. Go to the 'Support Tools\ReplProv' directory and it's the 'ReplProv.msi' file you’re after.