PowerShell 1.0 fails to start, wants some missing snap-in

Question

I get the following error when I attempt to start PowerShell 1.0:
Windows PowerShell terminated with the following error:
Cannot load Windows PowerShell snap-in Microsoft.PowerShell.Diagnostics because
of the following error: Could not load file or assembly 'file:///C:\Windows\Sys
tem32\WindowsPowerShell\v1.0\Microsoft.PowerShell.Commands.Diagnostics.dll' or o
ne of its dependencies. The system cannot find the file specified.
Indeed, the file is not present on my system, but it is also not present on other Windows 7 machines I have.
How do I fix this error so I could use PowerShell?  How/where can I remove that snap-in so it would stop asking for it?
I have Windows 7 Home Premium 64-bit
Thanks in Advance!

Answer 1

Hi,
I think the fastest way of troubleshooting is installing the most current version of PowerShell, which would be version 4.0.
Best greetings from Germany
Olaf
Thanks for the suggestion.  I tried installing 4.0, but it fails:
Some updates were not installed
The following updates were not installed:
Update for Windows (KB2819745)
I think the installer requires execution of PowerShell scripts, so if existing PowerShell is broken, the new one will fail to install.
Also, are versions other than 1.0 compatible with Visual Studio 2013?  Visual Studio uses PowerShell internally for a number of things, such as adding modules when creating a project.
I think the right approach would be to fix PowerShell 1.0 instead of trying to cover it with something else.
Suggestions are appreciated.