Error code 1 while executing Load runner controller

Hi All 

I am trying to execute Load runner controller using Wlrun.exe. It runs for intended VGen script, generates results but exits with error code as 1. When i checked into error log (i am on windows 7) this is what i get as error:

HP.LT.Logger configuration failed creating context provider of the type: HP.PC.Security.SSO.AppContextLoggingProvider, HP.PC.Security.SSO

Can anybody help me?