errors

new-item : The node at path 'commandbars\menu bar\help\about my module' does not support the cmdlet 'New-Item'
At C:\Users\jpoehls\documents\visual studio 2012\Projects\StudioShellSolModTest\packages\InterWorks.VSExtras.1.0\tools\Init.ps1:10 char:5
+     new-item 'dte:/commandbars/menu bar/help' `
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotImplemented: (commandbars\men...about my module:String) [New-Item], NodeDoesNotSupportCmdletException
    + FullyQualifiedErrorId : NewItem.NotSupported,Microsoft.PowerShell.Commands.NewItemCommand
 
The property 'ModuleOnRemove' cannot be found on this object. Verify that the property exists and can be set.
At C:\Users\jpoehls\documents\visual studio 2012\Projects\StudioShellSolModTest\packages\InterWorks.VSExtras.1.0\tools\Init.ps1:17 char:1
+ $MyInvocation.MyCommand.ScriptBlock.ModuleOnRemove = {
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException

Init.ps1

param($installPath, $toolsPath, $package, $project)

$sln = get-item dte:/solution;
$slnName = ( $sln.FullName | split-path -leaf ) -replace '\..+$','';

$menuItems = @(
    # list any menu items your module adds here
    #
    # e.g.:
    new-item 'dte:/commandbars/menu bar/help' `
     -name 'about my module' `
     -value { 'Module ${slnName}' | `
    out-outputpane; invoke-item dte:/windows/output; }
);

# this function is called automatically when your solution is unloaded
$MyInvocation.MyCommand.ScriptBlock.ModuleOnRemove = {
    # remove any added menu items;
    $menuItems | remove-item;
}

MyPackage.nuspec

<?xml version="1.0"?>
<package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
  <metadata>
    <id>MyPackage</id>
    <version>1.0</version>
    <owners>Joshua Poehls</owners>
    <authors>Joshua Poehls</authors>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <description>TODO</description>
    <tags>VisualStudio StudioShell</tags>
    <dependencies>
      <dependency id="StudioShell.Provider" version="1.6.2" />
    </dependencies>
  </metadata>
</package>