Siebel Connection Issue?

We are getting an error when we try to enable the connection for the Siebel Adapter . We have given all the parameters required for connecting to both the Siebel Windows-Thin Connection as well as Siebel Java Connection but the same error is displayed for both the Siebel Java Connection and the Siebel Windows- Thin Connection .I have given all the parameters rightly.

Please let me know wch jar files,fixes & server setting i have to do ?
Error :

[ART.118.5042] Adapter Runtime (Connection): Unable to enable connection resource folder:service.
[ART.118.5063] Adapter Runtime (Connection): Unable to start connection folder:service: after 1 attempt(s). com/Siebel/data/SiebelException

Siebel Configuration :
Transport tcpip
Encryption none
Compression none
Gateway server : servername:server port
Siebel Enterprise :es_siebel
Object Manager : objectManager XYZ
Siebel Server
Repository Context Siebel Repository
Language ENU
User Name XYZ
Password ******

Adapter version:6.0
JCA Spec version;1.0

Please help me as to how can we remove this error.Its a top priority for us.

regd
RJ–

Above issue is partially resolved by placing Siebel jars file & applied siebel fixes to IS 7.1.2 & siebel Adapter version 6.0 & siebel application 7.7

ie Siebel jars file IntegrationServer\packages\WmSiebelAdapter\code\jars
Siebel.jar,SiebelJI_Common.jar,SiebelJI_enu.jar
Patch History Fix:
SBL_6-0_SP3_Fix11
but while enabling siebel connection i am getting exception as follow:
dataBean.login(siebel.tcpip.none.none://xyz.na.abc.com:XXXX/es_siebel/eMedicalObjMgr_enu) threw a SiebelException: code(21905), msg(The username you have entered is invalid. Please try to log on again or contact your system administrator for assistance.(SBL-DAT-00254))
Has anyone has idea Is this Issue belong to User Authentication or what?