Powershell - calling unmanaged Function CreateProfile crashes Powershell.exe - powershell

Question

When calling a unmanaged piece of code with pinvoke -- createprofile. The Powershell.exe process crashes after the call to the method in the unmanaged code. The profile is created successfully.
Why this would happen? My code is below:
function CreateProfile
{
param([String]$UserSid, [String]$UserName, [system.uint32]$ProfilePath)
Add-Type -TypeDefinition '
using System;
using System.Runtime.InteropServices;
public static class PInvoke {
[DllImport("userenv.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern int CreateProfile( [MarshalAs(UnmanagedType.LPWStr)] String pszUserSid, [MarshalAs(UnmanagedType.LPWStr)] String pszUserName, [Out][MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder pszProfilePath, uint cchProfilePath);
}
'
$pszProfilePath = new-object -typename System.Text.StringBuilder
[int]$results = [PInvoke]::CreateProfile($UserSid, $UserName, $pszProfilePath, $ProfilePath)
}
$stringbuff = new-object system.text.stringbuilder(260)
[system.uint32]$a =$stringbuff.capacity
$sid = ((get-aduser -id 'brtestlocaluser').sid.value)
CreateProfile -usersid $sid -username 'brtestlocaluser' -ProfilePath $a

Answer 1

Finally was able to figure this out. Calling it in another means seemed to fix this issue.
function Register-NativeMethod
{
[CmdletBinding()]
[Alias()]
[OutputType([int])]
Param
(
# Param1 help description
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=0)]
[string]$dll,
# Param2 help description
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=1)]
[string]
$methodSignature
)
$script:nativeMethods += [PSCustomObject]#{ Dll = $dll; Signature = $methodSignature; }
}
function Add-NativeMethods
{
[CmdletBinding()]
[Alias()]
[OutputType([int])]
Param($typeName = 'NativeMethods')
$nativeMethodsCode = $script:nativeMethods | ForEach-Object { "
[DllImport(`"$($_.Dll)`")]
public static extern $($_.Signature);
" }
Add-Type #"
using System;
using System.Text;
using System.Runtime.InteropServices;
public static class $typeName {
$nativeMethodsCode
}
"#
}
function New-ProfileFromSID {
[CmdletBinding()]
[Alias()]
[OutputType([int])]
Param
(
# Param1 help description
[Parameter(Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
Position=0)]
[string]$UserName,
[string]$domain = ''
)
$methodname = 'UserEnvCP2'
$script:nativeMethods = #();
if (-not ([System.Management.Automation.PSTypeName]$methodname).Type)
{
Register-NativeMethod "userenv.dll" "int CreateProfile([MarshalAs(UnmanagedType.LPWStr)] string pszUserSid,`
[MarshalAs(UnmanagedType.LPWStr)] string pszUserName,`
[Out][MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszProfilePath, uint cchProfilePath)";
Add-NativeMethods -typeName $methodname;
}
$sb = new-object System.Text.StringBuilder(260);
$pathLen = $sb.Capacity;
Write-Verbose "Creating user profile for $Username";
#$SID= ((get-aduser -id $UserName -ErrorAction Stop).sid.value)
if($domain)
{
$objUser = New-Object System.Security.Principal.NTAccount($domain, $UserName)
$strSID = $objUser.Translate([System.Security.Principal.SecurityIdentifier])
$SID = $strSID.Value
}
else
{
$objUser = New-Object System.Security.Principal.NTAccount($UserName)
$strSID = $objUser.Translate([System.Security.Principal.SecurityIdentifier])
$SID = $strSID.Value
}
Write-Verbose "$UserName SID: $SID"
try
{
$result = [UserEnvCP2]::CreateProfile($SID, $Username, $sb, $pathLen)
if($result -eq '-2147024713')
{
$status = "$userName already exists"
write-verbose "$username Creation Result: $result"
}
elseif($result -eq '-2147024809')
{
$status = "$username Not Found"
write-verbose "$username creation result: $result"
}
elseif($result -eq 0)
{
$status = "$username Profile has been created"
write-verbose "$username Creation Result: $result"
}
else
{
$status = "$UserName unknown return result: $result"
}
}
catch
{
Write-Error $_.Exception.Message;
break;
}
$status
}