My PS1 Script always fails at line 2:

$root = (split-path -parent $MyInvocation.MyCommand.Definition) + '\..'
$version = [System.Reflection.Assembly]::LoadFile("$root\src\Migrator\bin\Migrator\Debug\Migrator.dll").GetName().Version

but I got this from here: http://www.codeproject.com/Tips/806257/Automating-NuGet-Package-Creation-using-AppVeyor where it works.

And it also works on my local machine!

Here the error:

Exception calling "LoadFile" with "1" argument(s): "The system cannot find the file specified. (Exception from HRESULT: 0x80070002)"
At C:\projects\migrator-net\nuget\pack.ps1:2 char:1
+ $version = [System.Reflection.Assembly]::LoadFile("$root\src\Migrator\bin\Migrat ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : FileNotFoundException
 
Setting .nuspec version tag to ..
Attempting to build package from 'Package.compiled.nuspec'.
NuGet.exe : '..' is not a valid version string.
At C:\projects\migrator-net\nuget\pack.ps1:12 char:1
+ & $root\NuGet\NuGet.exe pack $root\nuget\Package.compiled.nuspec
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : NotSpecified: ('..' is not a valid version string.:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
Parameter name: version