FusionLog.ps1

function Enable-FusionLog {
  param($logPath = "C:\Temp\Fusion")
  if(!(Test-Path $logPath)) {
    New-Item -ItemType Directory -Path $logPath
  }

  $fusionRoot = "HKLM:Software\Microsoft\Fusion"
  function Set-FusionKey($name, $value, $type) {
    if(!(Test-Path (Join-Path $fusionRoot $name))) {
      (New-ItemProperty $fusionRoot -name $name -propertyType $type -ErrorAction Stop) | Out-Null
    }
    Set-ItemProperty $fusionRoot -name $name -value $value -ErrorAction Stop  
  }
  Set-FusionKey "EnableLog" 1 dword
  Set-FusionKey "ForceLog" 1 dword
  Set-FusionKey "LogPath" $logPath string
}

function Disable-FusionLog {
  $fusionRoot = "HKLM:Software\Microsoft\Fusion"
  if(Test-Path (Join-Path $fusionRoot EnableLog)) {
    Set-ItemProperty $fusionRoot -name EnableLog -Value 0 -ErrorAction Stop
    Write-Host "Fusion log disabled"
  } else {
    Write-Host "Fusion log was not enabled"
  }
}