I'm using DirectSound 2.6 on a Pentium II 300Mhz, with my Roland GR30 as a
MIDI device.  When I run my scripts, sometimes Csound won't work.  It's
sort of sporadic as to when it will work and when it will not, but when it
fails, one of two things happens:

1)  I get as far as "WARNING:  All console text messages are disabled!"
and then it just freezes until I close the window

or

2)  After the warning about text messages, it says "Error opening MIDI IN
port: MMSYSTEM020 The driver did not generate a valid OPEN callback." in
the window and also in an Alert window.

This happened in previous versions of DirectSound, but I usually just
closed the window and started over.  But now it fails a dozen times in a
row, and the only way to fix it is to open up something else and come back
to Csound or in some extreme cases to restart my computer.  I'm not sure,
but I think there is something different about DirectSound 2.6 that
doesn't jive with my setup.

I've actually been preparing some MIDI/Csound electronic compositions for
a school recital in a few weeks, and the stability issue worries me a
little (although I still am confident that I can do the recital with it.)
So does anybody else know what I can do to keep this "driver did not
generate a valid OPEN callback" business from happening so much?  Is this
a bug?  I also would like to mention that aside from this one problem, the
version is really great.  Thanks.

				Kevin Gallager, kgallagh@astro.temple.edu
				Web - http://astro.temple.edu/~kgallagh