To use latest iSpirit ,you must install Microsoft .NET Framework 4 (not .NET Framework 4 Client Profile)


Microsoft .NET Framework 4 download page:

Standalone Installer
http://www.microsoft.com/download/en/details.aspx?id=17718

Web Installer
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=17851

or

http://download.cnet.com/Microsoft-NET-Framework-4/3000-10250_4-75450154.html


new feature
1. Support iOS 5.0/5.0.1

2. Fully support for install & uninstall IPA files.3. Added online wallpapers for download and setting for iDevices.

4. Improved overall stability and performance.

5. Running without UAC in Windows 7/Vista.