Trouble decrypting AES256 symmetric encrypted file

JIH, DOUG Y. doug.jih at
Sat Sep 17 04:30:11 CEST 2005

I got the following messages when I tried to decrypt a file.gpg with
the size 4,920,412,393 bytes.

gpg: AES256 encrypted data
gpg: encrypted with 1 passphrase
gpg: [don't know]: invalid packet (ctb=7e)
gpg: [don't know]: invalid packet (ctb=32)
gpg: WARNING: encrypted message has been manipulated!
gpg: [don't know]: invalid packet (ctb=2c)

The file was produced by encrypting with

gpg -c --cipher aes256 file

When the error messages occured, the output file has a size of
614,055,611 bytes.

Can anyone please help!

Using gpg version 1.4.2, official Windows version

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