Design Space Exploration (DSE) plugin: missing MathNet assembly

Hi everyone,
I forked DSE from Github to make some changes of my own. However, before changing anything, I cannot build it because an assembly is missing. Error CS0246: The type or namespace name 'MathNet' could not be found (are you missing a using directive or an assembly reference?) I installed the MathNET.Numerics package using NuGet, namely the latest version (4.15.0), as well as 3.20.0, which seemed to be the one used originally, but it is still complaining. Any suggestions on how to handle this?
Thanks in advance!