The guys at the Operations Manager Support Team Blog wrote about a solution to this issue:
An exception is thrown while importing the Red Hat Linux Management Pack for Operations Manager 2007.
An exception was thrown while processing ImportManagementPack for session id uuid:eff4da8a-fd0f-4607-9c63-5300f4733ee0;id=2.
Exception Message: The creator of this fault did not specify a Reason.
Full exception detail:
Could not load ManagementPack [ID=Microsoft.SystemCenter.WSManagement.Library, Keytoken=31bf3856ad364e35, Version=6.1.7221.30].
ManagementPack not found in the store.Version mismatch. For ManagementPack [[Microsoft.SystemCenter.WSManagement.Library,
31bf3856ad364e35, 6.1.7221.0]] requested version from the database was [6.1.7221.30], and actual version available is [6.1.7221.0]).
It seems this can happen if the WSManagement Library MP is not imported.
Check out the blog post over at the OpsMan Support Team blog.
Thanks for sharing guys!
Bob Cornelissen