You can have multiple versions of Csound on Windows, if you use batch files to start up command shells with the correct environment variables for each version. You can make shortcuts on your task bar or desktop to open these command shells, or to start Csound5GUI with the right variables, or whatever. This is not hard to do.

Regards,
Mike

-----Original Message-----
>From: Anthony Kozar 
>Sent: Dec 14, 2007 5:07 PM
>To: Csound Developer list 
>Subject: Re: [Cs-dev] Default file locations
>
>There are not multiple search paths for plugins and libraries -- just for
>input files (sound samples, analysis files, etc.).**  The environment
>variable determines where libraries are looked for if set.  This would seem
>to preclude multiple Csound installations on Windows (???).
>
>Anthony Kozar
>mailing-lists-1001 AT anthonykozar DOT net
>http://anthonykozar.net/
>
>** Exception: MacOS 9 looks in several places for plugins but that is partly
>a feature of the operating system.
>
>
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