I have novell 6 service pack 5.

I have seen this message into logger screen:

HTTPSTK: error -1 on listen() in listen thread
HTTPSTK: Listeningthread() on 199.x.x.x : 443 exiting after error.

what is this error?
Please, can someone help me?

I have deleted and re-created a new NDSPKI certificate Authority.
It could have been this?