[IronPython] Failed to install IronPython 2.6.1 rc1 for .NET 4.0 RC1

[Zhichao Hong]

I have downloaded the 2.6.1 rc1 for .NET 4.0 RC1.  The .NET 4.0 RC is
installed by the vs2010 RC installation.  The ironpython msi failed to
install.  I have searched the mailing list for related issues.  It looks
like I have to run mscorsvw.exe -i to install the .NET runtime optimization
service.  I then tried manually install it and the mscorsvw.exe fails
completely.  I cannot find it in either the device manager or services list.

I then generate a full install log for ironpython to dig in the details.
And it complains that ngen fails:
ExecNetFx:  Error 0x80070002: failed to execute Ngen command:
C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\ngen.exe install "C:\Program
Files\IronPython 2.6 for .NET 4.0 RC\Microsoft.Scripting.dll" /queue:1
Action 8:31:54: Rollback. Rolling back action:
Rollback: Publishing product information
Rollback: Publishing Product Features

I am puzzled now why it tries to use ngen from v2.0 instead of v4.0.  Since
this is a clean install of .NET 4.0.  The ngen.exe does not even exists in
the v2.0.50727 directory.

Any help?

-Zhichao

Zhichao Hong, CSDP
zhichao.hong at computer.org
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