libpcre.so.1 and libpcre.so.1.01 (was strange sendmail error msgs)

["David Karlin" <funk48@travelin.com>]

Hello,
I've been running a hamm system for a few months and recently installed exim
and libpcre1 (upon which exim depends).

Since then, I've been getting console msgs:

/usr/sbin/sendmail: error in shared libraries
libpcre.so.1: cannot open shared object file: No such file or directory

I'm guessing that the msgs were actually coming from exim and not sendmail
(although I haven't yet confirmed this hypothesis).

The real problem here seems to be libpcre.so.1, which I assumed was part of
the libcpcre1 package.

So I did 'dpkg -L libpcre1' and got:
/.
/usr
/usr/lib
/usr/lib/libpcre.so.1.01

What is the difference between libpcre.so.1 and libpcre.so.1.01?
Have I installed an incompatible version of libpcre1?

TIA,

--David