- Microsoft .NET Framework 4.0 https://www.microsoft.com/en-us/download/details.aspx?id=24872
- Visual Studio 2010 Tools for Office Runtime (VSTO 4.0) https://www.microsoft.com/en-us/download/details.aspx?id=43664
If you are having trouble opening an older chart, please first check if you have Microsoft .NET Framework 4.0 Extended installed on your machine. This is a necessary component to open some older charts. You can download Microsoft .NET Extended from here. If you have Microsoft .NET Framework 4.0 Extended already installed, there is a possibility that this chart has become corrupted and you will have to recreate the chart. We apologize for the inconvenience.