I had some trouble with my soundcard (at present an Audigy Platinum) and thanks to some most helpful advice from this forum I downloaded the Asio4All drivers and this seemed to solve my problem. I have also upgraded from Cubasis VST4 to Cubase SE which seems a big improvement. However, in the last couple of days I have started to experience a sudden and complete dropout of sound in some orchestral pieces written in Sibelius and brought into GPO as MIDI files. I can retrieve the situation simply by closing down Cubase and then reopening it, but the dropout is fairly random, only occurring from time to time, so it is becoming rather annoying, to say the least! I am wondering if this is a driver problem (I can't see how it could be a Cubase problem). I would be most grateful for any help or advice.