Have searched but can't find a previous thread on this topic. When trying to download a skin for Musicmatch Jukebox, I get the error message "Buffer Overrun Detected" .......a buffer overrun has been detected which has corrupted the programmes internal state. The programme cannot safely continue execution and must now be terminated. Also when burning cd using Nero 5.5 the writing buffer never becomes active, so every burn fails. The read buffer works ok. Both my machines are using XP and same versions of Nero and MMJB, and it all works perfectly on the other machine. Only thing I'm aware of that I've done is install SP1 on the machine that's having the problems. Any ideas as to what the Buffer I've done ??