Issue while sending a file from the Mendelson opensource AS2 1.1 build 35

Hi All,
While sending a file from the Mendelson opensource AS2 1.1 build 35 , I am facing the following probelm :

MessageHTTPUploader.performUpload: [IOException]: Keystore was tampered with, or password was incorrect
[2:24:32 PM] mendelson_opensource_AS2-1315895072248-6@TRADING_PARTNEConnection problem, failed to transmit data.
[2:24:32 PM] mendelson_opensource_AS2-1315895072248-6@TRADING_PARTNEMessage payload stored to "C:\mendelson\opensource\as2\messages\TETRA_PAK\error\TRADING_PARTNER\20110913\AS2Message3421008937846596452.as2".
[2:24:32 PM] mendelson_opensource_AS2-1315895072248-6@TRADING_PARTNERaw outgoing message stored to "C:\mendelson\opensource\as2\messages\TETRA_PAK\error\TRADING_PARTNER\20110913\raw\error8154663940222321798.raw".The first two paramtetrs related to the https are left undisturbed.

Can some one help me out here?
Thanks in adavnce.

I have set the password in the security tab (under the preference tab) as 'test' for keystore password(encryption/signature) and the keystore(enc, sign) is defaulted to the C:\mendelson\opensource\as2\certificates.p12