1080:no private key could be found for decryption

Hi,

I need to decrypt a file from a bank.   For past few weeks, all encryption / decruyption worked fine.  we stopped for 1 week,

then when bank sent me a test file Today, I got 1080:no private key could be found for decryption.

Could you help me if I cana find out where the problem is ? bank thought it's my mistake, I thought it's bank's.

below is the command

pgp --decrypt E:\XX\YY\OUT\ZZ_ToBeProcessed\ZZ_BAI_D160215133054020775.pgp --passphrase "MRSL" -o E:\XX\YY\OUT\ZZ_ToBeProcessed\ --home-dir "C:\Program Files\PGP Corporation\PGP Command Line"

thanks in advance,

gwang