PowerShell Error loading format file DotNetTypes.format.ps1xml
I have just updated to nuget 1.6 and now I get this message in visual studio's Package Manager Console

There were errors in loading the format data file: Microsoft.PowerShell.Core, Error in file C:\Windows\SysWOW64\WindowsPowerShell\v1.0\DotNetTypes.format.ps1xml: Data at the root level is invalid. Line 1, position 1

Any ideas how to I fix that?

I'm using 64 bit windows 7 if it matters.
PowerShell Error loading format file DotNetTypes.format.ps1xml
===

I have just updated to nuget 1.6 and now I get this message in visual studio's Package Manager Console

There were errors in loading the format data file: Microsoft.PowerShell.Core, Error in file C:\Windows\SysWOW64\WindowsPowerShell\v1.0\DotNetTypes.format.ps1xml: Data at the root level is invalid. Line 1, position 1

Any ideas how to I fix that?

I'm using 64 bit windows 7 if it matters.