crc errors on decrypting PGP6.0 messages

[Frank Schmalz]

Hi,
I am getting CRC errors when I try to decrypt a message encrypted with
PGP6.02.
Here they are:
>frank@sun62$>cat test1.asc | gpg --decrypt > test1.gpg
>gpg (GnuPG) 0.9.6; Copyright (C) 1999 Free Software Foundation, Inc.
>This program comes with ABSOLUTELY NO WARRANTY.
>This is free software, and you are welcome to redistribute it
>under certain conditions. See the file COPYING for details.
>
>gpg: Warning: using insecure memory!
>gpg: CRC error; 7715ce - dc3771
>frank@sun62$>

The second error (another file) might give more clues:
>gpg: CRC error; 13b497 - dc313b
>gpg: quoted printable character in armor - probably a buggy MTA has >been used

The message was encrypted with ascii armor, send with eudora on Win98,
recieved with Netscape on the sun and saved as is to test1.asc.

Any clues?

CU,
     Frank