I am migrating a server from NW6 SP5 to NW6.4 SP4 using the wizard but keep
getting the following error.

Error getting the NCP Extension information on server 'FS135TH'.
--- Error caused by a NetWare API error ---
This error means that the error code returned has different meanings for
different functions.
(Error code: 0X89ff Function Name: NWGetNCPExtensionInfoByName)

Any ideas? I am using Version 8.1.508.15 of the wizard.