I'm trying to get NAnt 0.86b1 running with VS2008 SP1 and x64 XP.

I have a basic build file (below) which gives the error Solution format of file 'Solution.sln' is not supported.

<property name="nant.settings.currentframework" value="net-3.5" />

<target name="build" description="Full Rebuild" depends="clean,compile" />  

<target name="clean" description="Cleans outputs">
    <delete dir="bin" failonerror="false" />
    <delete dir="obj" failonerror="false" />
</target>

<target name="compile" description="Compiles solution">
    <solution configuration="debug" solutionfile="Solution.sln" />
</target>

Has anyone else experienced this problem? I can't find anything useful out there about this.

visual-studio-2008 .net-3.5 nant
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