This mod is not known to work with the latest version of Kerbal Space Program. Proceed with caution.
More recent forks of this mod can sometimes be found posted by FreeThinker (a frequent contributor to this mod)- which after examining and testing I will generally try to integrate here into the official version.
https://spacedock.info/mod/890/Netherdyne%20Mass%20Driver%20Mod%20
Also, check out FreeThinker's KSP-Interstellar Extended mod, which I co-founded with him and he now develops/updates/maintains with occasional contributions/suggestions from me!
https://spacedock.info/mod/172/KSP%20Interstellar%20Extended
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.