boxstarter error

cinst VisualStudio2015Professional error

Chocolatey (v0.9.8.33) is installing 'VisualStudio2015Professional' and dependen
cies. By installing you accept the license for 'VisualStudio2015Professional' an
d each dependency you are installing.

VisualStudio2015Professional v14.0.22823.0-RC
Write-Error : Package 'VisualStudio2015Professional v14.0.22823.0-RC' did not i
nstall successfully: The term 'Install-ChocolateyPackage' is not recognized as
the name of a cmdlet, function, script file, or operable program. Check the spe
lling of the name, or if a path was included, verify that the path is correct a
nd try again.
At C:\ProgramData\chocolatey\chocolateyinstall\functions\Chocolatey-NuGet.ps1:9
0 char:28
+                 Write-Error <<<<  "Package `'$installedPackageName v$installe
dPackageVersion`' did not install successfully: $($_.Exception.Message)"
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorExcep
   tion
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorExceptio
   n,Write-Error

Finished installing 'VisualStudio2015Professional' and dependencies - if errors
not shown in console, none detected. Check log for errors if unsure.
Write-Error : Chocolatey reported an unsuccessful exit code of 1
At line:124 char:32
+                     Write-Error <<<<  "Chocolatey reported an unsuccessful ex
it code of $LastExitCode"
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorExcep
   tion
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorExceptio
   n,Write-Error

++ Boxstarter finished Calling Chocolatey to install VisualStudio2015Professiona
l. This may take several minutes to complete... 00:00:07.4679690
++ Boxstarter starting Calling Chocolatey to install resharper. This may take se
veral minutes to complete...
!!ATTENTION!!
The next version of Chocolatey (v0.9.9) will require -y to perform
  behaviors that change state without prompting for confirmation. Start
  using it now in your automated scripts.

  For details on the all new Chocolatey, visit http://bit.ly/new_choco