Cluster IP Address resource 'name' cannot be brought online because the subnet mask parameter is invalid. Please check your network configuration.
The subnet mask parameter of the network configuration does not match the required XXX.XXX.XXX.XXX format. The incorrect subnet mask might have been specified in the registry with a registry editor or a tool that's not part of the Cluster service. Cluster service tools validate any subnet mask that you enter.
Locate the incorrect subnet mask, and correct it.