AppVeyor check fails during setup

[gdavison]

AppVeyor checks fail during setup with the following error

c:\opscode\chefdk\bin\chef.bat shell-init powershell | iex; cmd /c c:\opscode\chef-workstation\bin\chef.bat --version
c:\opscode\chefdk\bin\chef.bat : The term 'c:\opscode\chefdk\bin\chef.bat' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify 
that the path is correct and try again.
At line:1 char:1
+ c:\opscode\chefdk\bin\chef.bat shell-init powershell | iex; cmd /c c: ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (c:\opscode\chefdk\bin\chef.bat:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
cmd : 'c:\opscode\chef-workstation\bin\chef.bat' is not recognized as an internal or external command,
At line:1 char:61
+ ... hell | iex; cmd /c c:\opscode\chef-workstation\bin\chef.bat --version ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: ('c:\opscode\che...ternal command,:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
operable program or batch file.

Command executed with exception: operable program or batch file.