vi can't find libc.so.2

[jrc at c2s.mn.org]

When I try to bring up vi on a SparcSLC running SunOS 4.1, the message

ld.so: libc.so.2: not found

comes up. The file /usr/lib/libc.so.1.5 is present .  What does this mean,
and what can I do to fix it ?  It appears that libc.so.2 is not supposed
to exist for this version of the OS.  We tried a few tricks, like copy
libc.so.1.5 to libc.so.2, ftp a new version of vi from another SLC, this
didn't work.

Thanx in advance,

Jeffrey Comstock
Com Squared Systems
612-452-9522