The full message that I get when launching the tool =>
I am running Windows 7 Pro on a Vaio laptop. So there is no way I can get this tool to run even just one time. 2/ Then I try to remove the detected SDK, I, do APPLY, quit the box and come back to verify it was removed, then when I try to install the SDK, by clicking on the ruby.exe or rubyw.exe in the proposed path (wich is good), I get this stupid message : The selected file is not a valid home for Ruby SDK
