If you get an error in iManager with a blank error string (no text appears with the error message) while attempting to bring a resource online, it is possible that Novell Cluster Services views the resource as secondary even though BCC has changed the resource to primary and iManager shows the resource as primary.
To resolve this problem, make a change to the cluster properties to cause the NCS:Revision attribute to increment. You could add a comment to the resource load script to cause this to happen.