problem in Transaction iview

Hi Experts,

I am working on portal 7.0.i created a Transaction iview in my Development System. Its working fine .I transported this iview to QA. its throwing exception.

Then i created Transaction iview in QA system itsely. same portal runtime error coming. From this Transaction iview iam accessing my BW system.

i checked my PORTAL QA connections they are fine.

portal iview error occurring while preview transactional iview:

Exception in SAP Application Integrator occured: Missing Property 'ClassName' in property file for layer'Transaction/WinguiSSOLayer'..

Thanks and Regards

Sasikanth