[mrtg] Problem: rateup died from Signal 9

[LeBeau, Brad]

On a new installation of MRTG, Solaris x86 I receive the following error
while running ./mrtg mrtg.cfg :

ld.so.1: .//rateup: fatal: /usr/lib/libpng.so.2: unknown file type

I've recompiled the png libs and mrtg, but still receive the error.  GD
compiled and installed without a hitch.  Zlib is now a part of the Solaris 8
installation.
Could someone give me a clue as to what to check next?