Business Analytics error - Create failed for Login

I’m attempting to install Business Analytics with NAV 4.0 SP3 on SQL2005. The server is clustered and 64bit. I used the BA for NAV 5.0 which works fine in a test environment (not clustered or 64bit). In production I used the hotfix for 64bit (KB 943150) and have taken into condiseration KB 930289 (How to set up Business Analytics 4.0 on a SQL Server cluster). When I run the Configurator.exe file the Configure Security step fails. The error reported is ‘Create failed for Login ODSQL1\BA Administrator’.

I haven’t found any information regarding how o resolve this. Any ideas?