Mike,

A bit more info about the "pa" problem in the 5.09 Windows installer.

I should think the problem relates to the warning messages below. (This, 
with installation in the default directory.)

Indeed all three .dll's are present where they should be.

I tried installs in these locations (all without Python):
C:\Program Files\Csound (the default)
C:\Csound5.09
C:\Csound509

All gave the same result. I had thought perhaps that the default location 
might be required, or that the dot or space in the directory path might be 
giving some problem. It seems not.

Art Hunkins
--------------------

0dBFS level = 32768.0
Csound version 5.09 beta (float samples) Sep 13 2008
libsndfile-1.0.18pre22
Reading options from $CSOUNDRC: C:\Program Files\Csound\.csoundrc
WARNING: could not open library 'C:\Program Files\Csound\plugins\rtpa.dll' 
(-1)
WARNING: could not open library 'C:\Program Files\Csound\plugins\csnd.dll' 
(-1)
WARNING: could not open library 'C:\Program 
Files\Csound\plugins\fluidOpcodes.dl
l' (-1)