GlassCalc requires the Microsoft .NET Framework 4.0 and Windows XP or greater. (Transparency effects only appear on Vista and Windows 7 with Aero turned on) It may run on a version of Windows earlier than XP, but has not been tested. GlassCalc also requires the Visual C++ 2005 libraries. Both .NET 4.0 and the VC++ libraries will be installed automatically with the program if needed.
If you already have them installed, a much smaller download is available from the program homepage.
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