Can not create ActiveX

Hi,

After launching BPC5.1, i tried to connect to BPC for Administration. I received a system error : " The system encountered an error and cannot proceed. Please select the Back button and try again. If the problem persists, contact your administrator. Job name : http://<ip address>/osoft/clientsupport.aspx, Detail: EvErr:UserService.GetParentList; Cannot create ActiveX component.

Any idea, anybody?

Thanks in advance for your help.

Cheers