I purchased two copies of KSP. I've transferred one of them to Steam. To install the other one, I follow these instructions: https://www.kerbalspaceprogram.com/instructions.php If I click on any of the versions, it takes me to a URL like this: https://kerbalspaceprogram.com/lib/multiplayDwn.php?version=win-0-90-0 And I get a: Not Authorised error. I can't download 0.9, 0.25, or the installer for windows, mac, or linux. I've tried using Firefox and IE and I've tried this on multiple computers with multiple Windows OSes. I exchanged some support e-mail some months ago, without resolution. I was wondering if anyone else had seem similar behavior when trying to download the game manually. Thanks!