Visual Studio 2010 PowerCommands extension missing in options dialog

I downloaded and installed the PowerCo开发者_如何学运维mmands.vsix extension for Visual Studio 2010.

But then, under Tools->Options there is no entry for the extension.

Visual Studio says that it is correctly installed in the Extension Manager.

Do you know where to find the tools?

Many thanks, Juergen

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I've found these links:

social.msdn.microsoft.com

connect.microsoft.com

So it seems that this is a serious problem that may occur. In my case only a clean reinstallation of VS2010 fixed the problem.