In short: you might get it working for an afternoon. Then an update hits, or you try to install a mod like Kerbal Engineer Redux , and suddenly everything crashes to desktop.

For an unlocker to work with KSP, users typically follow these steps: Acquire Expansion Files : Users obtain the SquadExpansion folders (containing MakingHistory BreakingGround

A "KSP DLC unlocker.exe" that is 150KB? That cannot possibly contain a working crack. But it can contain a downloader for much nastier things.