If you are getting this error when try to add a custom column of the Managed Metadata type to your site collection then simply use the following command to activate this feature:
STSADM -o activatefeature -id 73EF14B1-13A9-416b-A9B5-ECECA2B0604C -url http://<server> -force
Where the <server> feature is the name of the server, since this is a farm feature.
If you are more inclined to use Powershell, and why wouldn’t you be, then use this cmdlet:
<font face="Arial">Enable-SPFeature -id 73EF14B1-13A9-416b-A9B5-ECECA2B0604C -URL <SiteCollectionURL</font>>
I don't know why this isn't enabled (since on other installation I didn't see this error) but at least its a fix.
Good luck :)