XLCubed is now FluenceXL. The new wiki can be found here: https://help.fluencexl.com/

XLCubed In-Cell Excel Edition Prerequisites

XLCubed In-Cell Excel Edition requires several packages installed in order to operate correctly. These will be downloaded and installed automatically when you run the XLCubed Excel Edition Setup program.

If access to the internet is unavailable, the packages can be installed manually prior to installation.