I've installed NSM 2.5 on a Netware 6.5 SP7 server. The install seems to finish successfully without error, but I can't connect with NSMAdmin. On the NSM Engine screen at the console I see these messages:

NSMENGIN entering setup mode because the proper configuration files could not be found.
NSMENGIN failed to remove volume cache file (SYS:FACTORY\VOLCACHE.DAT); Result = -1
UIMain: Next server list rebuild time = Mon Jan 18 21:00:00