Siebel 8.1.1.6 - DBXtract failing with RC2 Encryptor error

Hi,

We have upgraded our siebel database from 7.7.2.8 to 8.1.1.6. After upgrade, when I start dbxtract job in 8.1.1.6, it is failing with below error:

CryptEngine     CryptEngineError        1       000000064f2d5c07:0      2012-02-04 15:59:23     Decrypt failed with 10879085. Error during encryption or decryption operation by t
he RC2 Encryptor.
ObjMgrLog       Error   1       000000064f2d5c07:0      2012-02-04 15:59:23     (keymanager.cpp (972)) SBL-SVC-00284:
Internal: error occurred during key decryption.

GenericLog      GenericError    1       000000064f2d5c07:0      2012-02-04 15:59:23     (keymgradpt.cpp (146) err=10879260 sys=2) SBL-SVC-00284:
Internal: error occurred during key decryption.

GenericLog      GenericError    1       000000064f2d5c07:0      2012-02-04 15:59:23     (utlmisc.cpp (1618) err=1166179 sys=0) SBL-DCK-52067: An error occurred loading encryption
 subsystem. Please check for more detailed errors from encryption subsystem in this log file