After installing Windows 7 build 7057 x64 the VI Toolkit starts with the following error /warning. If you run the Set-ExecutionPolicy unrestricted command as a normal user, the command will not run successfully.
The solution is simple: Open the VI Toolkit with the Run as administrator permissions option.
When the VI Toolkit window pop’s up. Run the Set-ExecutionPolicy unrestricted command, and the VI Toolkit starts without the error.