Store System Account in Flow Variables stops working in HPOO 10.20

Hello, we are using operation Store System Account in Flow Variables  in our project, after installing OO 10.20 it stops working. 

When we ran flow in studio, it works well, we also run through remote debugger, it also ran well. But when we run it directly from a central ( as admin user ) we got this error message (visible in server.log)
2014-12-08 21:37:10,760 [http-nio-8443-exec-3] (ContentConfigItemV1Controller.java:364) ERROR - Cannot find or access Configuration Item: VirtualAgentCentral
2014-12-08 21:37:12,369 [http-nio-8443-exec-7] (ContentConfigItemV1Controller.java:364) ERROR - Cannot find or access system-accounts/VirtualAgentCentral

 

We are sure that account exists and username/password is correct set (working in other operations) and all permissions are set too.

 

We do not know if its a bug, or we are missing some configuration. 

 

Does anyone experiencing the same?