Solution manager diagnostics Agent error

Hello experts,

I have installed the Solution manager on windows server 2008 using SQL server 2008 as database, I can now login to java application server using J2EE_admin user, but when i use this user to login to soultion manager diagnistics agent i get this error (Message.rfc_get_error), i have tried users that created while the installation (ADS_AGENT, ADSUSER, DDIC, J2EE_ADMIN,

J2EE_GUST,SAP*, SAPJSF, SLDAPIUSER, SLDDSUSER) but i get the same error, I am new with the sap soultion manager and need your help

Thanks & Best regards,

Mohamed Azab