I have an application, and when run, it gives these errors :- fixme:winsock:_remap_optname Unknown optname 10, can't remap! fixme:winsock:_remap_optname Unknown optname 12, can't remap! fixme:winsock:ws_sockaddr_ws2u Unknown address family 56574, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 8344, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 54078, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 14282, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 16488, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 42150, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 22934, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 48648, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 23643, return NULL. fixme:winsock:ws_sockaddr_ws2u Unknown address family 717, return NULL. I believe it is because the application listens to muticast socket and that seems to fail under wine. I am running wine 1.1.26. Rdgs