Ista 4.39.20 Extra Quality Download May 2026

# Launch ISTA 4.39.20 with temp cleanup $istaPath = "C:\EC-Apps\ISTA\ISTAGUI.exe" $logPath = "$env:APPDATA\ISTA\Logs" if (Test-Path $logPath) { Remove-Item "$logPath*" -Recurse -Force -ErrorAction SilentlyContinue Write-Host "Cleaned ISTA logs" }