Today I installed an application Appigo Sync which requires Microsoft .NET Framework 3.5 SP1 for Windows. Unfortunately as I wasn't sure I had the most updated version, I uninstalled Microsoft .NET Framework 3.5, 3.0 and 2.0, then tried to reinstall several times and keep getting a setup error, "An error occurred during setup. Installed files have been removed from your computer." so that the package does not install. Could you please help me to install ? I'm running Windows XP Professional. Thanks so much.