wplus_http_wsock_request_ex events with the same processID, sessionid and httpid error

Hi All,

While recording one of my script, I am seeing following error in generation log:

Error: found multiple wplus_http_wsock_request_ex events with the same processID, sessionid and httpid!

Also, I could see that Loadrunner is not able to add any events for the transaction. I can see Request & response Header body to be present in the transaction but no event were created for the transaction with same id.

Has anybody encountered this error before? I need to correlate one &RelayState value in header in encoded form to make the script work. 

Please throw some light on this issue.

Thanks,

Vishwas