I installed BOE XI 3.1, Crystal 2008, Xcelsius 2008 SP3, LiveOffice 3.1 and finally, SAP KIT. Everything worked fine including SAP Authentication and Universe Designer. I was able to create some OLAP Universes.
Now, all of a sudden Universe is not connecting to the BOE Enterprise with an error Message 'Internal Problem' and 'Open Session: Unexpected error'. Is this a known issue and if so how could I resolve it?