XCelsius - BEx Connectivity

Hi,

I have installed XCelsius 2008 SP2 and trying to BEx directly..

SAP Gui 7.10 with BW Add-On

NW 7.0 EHP 1 with SP05

I am able to connect to BI and when i try to pull up BEx queries

Its asking for another authentication for BI Java / EP ??!!

And throws error 2032..

Is BEx web required / configured ?

BI Java / Enterprise Portal...If portal what Roles ?