When I installing wiznet configuration tool, it gives error " Run time error 10048 address in use" though I tried many times to repair/modify/remove and again reinstalling it but it gives same error.
10048 Socket Error means already address in use.
refer to http://msdn.microsoft.com/en-us/library/windows/desktop/ms740668(v=vs.85).aspx
I think the configuration tool maybe abnormal terminated and the address is still remained.
You’d better reset your PC.