[OT] Mystery event log entry on NT 4.0

Any NT 4.0 gurus out there that can shed some light on this event log
message? It has just started popping up on the server that was previously
our Vantage 3.0 machine.

The description for Event ID(1) in Source (ICSM) could not be found. It
contains the following insertion string(s):cluster::Open()Failure opening

Rio is the name of the server. I've searched the MS knowledgebase for ICSM
and event ID 1 and came up empty. Any information would be greatly
appreciated since I'm trying to get some files and apps off a 6 year old
machine onto this one and don't want to do it if the problem is terminal and
needs a fresh install.